WORLD OF FREE MATHS and VEDIC MATHS TRICKS

puzzle

2010-02-13T22:03:00.000-08:00

You want to send a valuable object to a friend& You have a box to send the object.
The box has a locking ring which is more than large enough to have a lock attached
You and your friend have several locks with keys.
Butthe problem is that your friend does not have the key to any lock that you have, and vice versa. How do you do it?

Note: you cannot send a key in an unlocked box

For Solution SCROLL DOWN...

Solution:

Attach a lock to the ring. Send it to her. She attaches her own lock and sends it back. You remove your lock and send it back to her. She removes her lock.

simple

PUZZLE

2010-02-13T21:56:00.000-08:00

HOW MANY TRIANGLES ARE THERE IN THIS FOLLOWING FIGURE...?

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U CAN WRITE YOUR ANSWER IN COMMENT

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THE CORRECT ANSWER IS 20

square of numbers in 100's

2009-09-16T11:11:00.000-07:00

> Choose a number over 100 (START WITH SMALLER NUMBER).
> The last two places will be the square of
the last two digits (keep if any carry) _ _ _ X X.
> The first three places will be the number plus
the last two digits plus any carry: X X X _ _.

here is an Example:

> let the number be 108:
2. Square the last two digits (no carry): 8 × 8 = 64: _ _ _ 64
3. Add the last two digits to the number: 108 + 08= 116:
so 1 1 6 _ _
4. So 108 × 108 = 11664.

FIND SQUARE OF NUMBERS IN 200 TO 299

2009-09-16T11:04:00.000-07:00

steps to find square of numbers in 200's

> Choose a number in the 200s (start with numbers under 210, then try for larger ones).
>The first digit of the square is 4: 4 _ _ _ _
> The next two digits will be 4 times the last 2 digits: _ X X _ _
> The last two places will be the square of the last digit: _ _ _ X X

here we take an Example:

> let the number be 207:
> The first digit is 4
so 4 _ _ _ _
> The next two digits are 4 times the last digit:
4 × 7 = 28
so _ 2 8 _ _
Square the last digit: 7× 7 = 49
so _ _ _ 49
So finally we get 206 × 206 = 42849.

and For larger numbers work right to left:

> Square the last two digits (keep the carry): _ _ _ X X
> 4 times the last two digits + carry: _ X X _ _
> Square the first digit + carry: X _ _ _ _

example

>If the number to be squared is 225:
> Square last two digits (keep carry):
25x25 = 625 (keep 6): _ _ _ 2 5
> 4 times the last two digits + carry:
4x25 = 100; 100+6 = 106 (keep 1): _ 0 6 _ _
> Square the first digit + carry:
2x2 = 4; 4+1 = 5: 5 _ _ _ _
> So 225 × 225 = 50625.

QUIZ

2009-07-24T08:12:00.000-07:00

can anyone make 3 using two 2's???

ONE ANSWER IS
2^0 + 2=3

IF YOU HAVE ANY ANSWER POST IT AS COMMENT........

EASY MULTIPLICATION TRICK

2009-07-24T08:10:00.000-07:00

Method for multiplying numbers where the first figures are the same and the last figures add up to 10
FOR EG:

32 x 38 = 1216
Both numbers here start with 3 THEY ARE SAME and the last
figures (2 and 8) add up to 10
So we just multiply 3 by 4 (the next number up)
to get 12 for the first part of the answer.
And we multiply the last figures: 2 x 8 = 16 to
get the last part of the answer.
· And 81 x 89 = 7209
We put 09 since we need two figures as in all the other examples

MATHS PUZZLE

2009-07-24T07:52:00.000-07:00

solve this

Village A has a population of 70,000, which is decreasing at the rate of 1000 per year.
Village B has a population of 52000, which is increasing at the rate of 400 half yearly
.How many years will they take to reach same population

try its easy .............

leave your answer as a comment......

ANSWER

let,after x yrs their will b same...

after x yrs in A population decreases 1000x & in B population increases (2*400*x)=800x .

So,
70000-1000x = 52000 + 800x
x= 10

SIMPLE TRICKS TO MULTIPLY

2009-07-15T09:36:00.000-07:00

Multiply by 5: Multiply by 10 and divide by 2.
Multiply by 6: Sometimes multiplying by 3 and then 2 is easy.
Multiply by 9: Multiply by 10 and subtract the original number.
Multiply by 12: Multiply by 10 and add twice the original number.
Multiply by 13: Multiply by 3 and add 10 times original number.
Multiply by 14: Multiply by 7 and then multiply by 2
Multiply by 15: Multiply by 10 and add 5 times the original number, as above.
Multiply by 16: You can double four times, if you want to. Or you can multiply by 8 and then by 2.
Multiply by 17: Multiply by 7 and add 10 times original number.
Multiply by 18: Multiply by 20 and subtract twice the original number (which is obvious from the first step).
Multiply by 19: Multiply by 20 and subtract the original number.
Multiply by 24: Multiply by 8 and then multiply by 3.
Multiply by 27: Multiply by 30 and subtract 3 times the original number (which is obvious from the first step).
Multiply by 45: Multiply by 50 and subtract 5 times the original number (which is obvious from the first step).
Multiply by 90: Multiply by 9 (as above) and put a zero on the right.
Multiply by 98: Multiply by 100 and subtract twice the original number.
Multiply by 99: Multiply by 100 and subtract the original number.

Square 2 Digit Number:WITH UP-DOWN Method

2009-07-15T09:32:00.000-07:00

Square a 2 Digit Number, for this example 37:

> Look for the nearest 10 boundary
> In this case up 3 from 37 to 40.
> Since you went UP 3 to 40 go DOWN 3 from 37 to 34.
> Now mentally multiply 34x40
> The way I do it is 34x10=340;
> Double it mentally to 680
> Double it again mentally to 1360
> This 1360 is the FIRST interim answer.
> 37 is "3" away from the 10 boundary 40.
> Square this "3" distance from 10 boundary.
> 3x3=9 which is the SECOND interim answer.
> Add the two interim answers to get the final answer.
> Answer: 1360 + 9 = 1369

TRICK TO SUBSTRACT NUMBER EASILY

2009-07-15T09:15:00.000-07:00

this is an easy trick
To subtract a large number from 1,000
subtract all but the last number from 9, then subtract the last number from 10

1000
-547

step1: subtract 5 from 9 = 4
step2: subtract 4 from 9 = 5
step3: subtract 7 from 10 = 3

answer: 453

BEAUTY OF MATHS

2009-06-27T23:52:00.000-07:00

1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + 5 = 98765
123456 x 8 + 6 = 987654
1234567 x 8 + 7 = 9876543
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321

1 x 9 + 2 = 11
12 x 9 + 3 = 111
123 x 9 + 4 = 1111
1234 x 9 + 5 = 11111
12345 x 9 + 6 = 111111
123456 x 9 + 7 = 1111111
1234567 x 9 + 8 = 11111111
12345678 x 9 + 9 = 111111111
123456789 x 9 + 10 = 1111111111

9 x 9 + 7 = 88
98 x 9 + 6 = 888
987 x 9 + 5 = 8888
9876 x 9 + 4 = 88888
98765 x 9 + 3 = 888888
987654 x 9 + 2 = 8888888
9876543 x 9 + 1 = 88888888
98765432 x 9 + 0 = 888888888

1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
1111111 x 1111111 = 1234567654321
11111111 x 11111111 = 123456787654321
111111111 x 111111111 = 12345678987654321

12345679 x 9 = 111111111
12345679 x 18 = 222222222
12345679 x 27 = 333333333
12345679 x 36 = 444444444
12345679 x 45 = 555555555
12345679 x 54 = 666666666
12345679 x 63 = 777777777
12345679 x 72 = 888888888
12345679 x 81 = 999999999

9 x 9 = 81
99 x 99 = 9801
999 x 999 = 998001
9999 x 9999 = 99980001
99999 x 99999 = 9999800001
999999 x 999999 = 999998000001
9999999 x 9999999 = 99999980000001
99999999 x 99999999 = 9999999800000001
999999999 x 999999999 = 999999998000000001

6 x 7 = 42
66 x 67 = 4422
666 x 667 = 444222
6666 x 6667 = 44442222
66666 x 66667 = 4444422222
666666 x 666667 = 444444222222
6666666 x 6666667 = 44444442222222
66666666 x 66666667 = 4444444422222222
666666666 x 666666667 = 444444444222222222

Temperature Conversion

2009-06-27T23:39:00.000-07:00

Temperature Conversion

This is a easy trick to convert Fahrenheit to Celsius & vice versa.

The answer you will get will not be an exact one, but it will give you an idea of the temperature you are looking at.

Fahrenheit to Celsius:

Take 30 away from the Fahrenheit, then divide the answer by 2. This is your answer in Celsius.

Example:

94 Fahrenheit - 30 = 64. Then divide by two, 32 Celsius.

so 94 Fahrenheit = 32 Celsius.

Celsius to Fahrenheit just do the reverse:

Double it, then add 30.

40 Celsius double it, is 80, then add 30 is 110

40 Celsius = 110 Fahrenheit

TRICK TO GET UR TELEPHONE NUMBER

2009-03-25T10:53:00.001-07:00

1. take a calculator
2. Key in the first 4 digits of your phone number (eg if ur landline is 2888xxxx TAKE 2888)
3. Multiply by 80
4. Add 1
5. Multiply by 250
6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again
8. Subtract 250
9. Divide number by 2

Do you recognize the answer

yes its ur landline number................

FUNNY CALCULATOR TRICK

2009-03-25T10:52:00.000-07:00

1. take a calculator
2. type in "12345679" (remember not 8)
3. times it by any number multiplied by 9,
lets say if u you want 5as answer , 5*9=45, so 12345679*45=?

try multiplying by: 9,18,27,36 and so on...

& see the magic of maths

TO FIND SQUARE OF 3-DIGIT NUMBER

2009-03-08T03:04:00.000-07:00

LET THE NUMBER BE ABC

SQ (ABC) is calculated like this

STEP 1. Last digit = last digit of SQ(C)
STEP 2. Second Last Digit = 2*B*C + any carryover from STEP 1.
STEP 3. Third Last Digit 2*A*C+ Sq(B) + any carryover from STEP
2.
STEP 4. Fourth last digit is 2*A*B + any carryover from STEP 3.
STEP 5 . In the beginning of result will be Sq(A) + any carryover
from Step 4.

EXAMPLE :

SQ (431)

STEP 1. Last digit = last digit of SQ(1) =1
STEP 2. Second Last Digit = 2*3*1 + any carryover from STEP
1.= 6
STEP 3. Third Last Digit 2*4*1+ Sq(3) + any carryover from STEP
2.= 2*4*1 +9= 17. so 7 and 1 carryover
STEP 4. Fourth last digit is 2*4*3 + any carryover (which is 1) . =
24+1=25. So 5 and carry over 2.
STEP 5 . In the beginning of result will be Sq(4) + any carryover
from Step 4. So 16+2 =18.

So the result will be 185761.

SHORT CUT TO MULTIPLY ANY NO BY 12

2009-03-08T03:00:00.000-07:00

EG: IF WE WANT TO PERFORM

12 X 6

The first thing is to always multiply the 1 of the twelve by the
number we are multiplying by, in this case 6. So 1 X 6 = 6.

Multiply this 6 by 10 giving 60.

Now multiply the 6 by the 2 of twelve giving 12. Add this to 60 giving 72.

Therefore 6 X 12 = 72

METHOD OF MULTIPLICATION

2009-02-25T03:48:00.000-08:00

i will show u one more method of multiplication.
IT IS VERY EASY

EG:
96*96
take hundred as the reference.then think what should be subtracted from 96 to make it hundred.
-4.
then write like this
96 96
-4 -4
add diagonally 96-4=92
multiply -4*-4=16
the product of 96*96 will be 9216

IF U LIKE THIS TRICK PLZ LEAVE UR COMMENTS

INCREASE UR SPEED OF MULTIPLICATION

2009-02-25T03:46:00.000-08:00

take a number ending with 5 and then multiply it by itself
a simple method

eg:35*35

multiply the first digit ie 3 with the (digit+1)=4

3*4=12
these r the first two nos of ans
the last two nos will always be 25

so the ans is 1225

SOLVE THIS......

2009-02-25T03:44:00.000-08:00

solve this ...

4___4___4___4=20

rules
>USe any three symbols two solve it
>u can use Multiply*, Subtract-, Add+ or divide/.........dnt use symbols twice

one solution to this problem is
[ ( 4 / 4) + 4 ] * 4
T
if u have any other u can write in comment with ur name

IPL SEASON 2 TIME TABLE

2009-02-17T08:08:00.000-08:00

India Premiere League (IPL) season 2

$$$$$ TimeTable $$$$$

>1. Bangalore Royal Challengers Vs Kolkata Knight Riders
Date : April 18, 2009
Time: 8:00 PM
Ground: Bangalore

>2. Kings XI Punjab Vs Chennai Super Kings
Date : April 19, 2009
Time: 5:00 PM
Ground: Mohali

>3. Delhi Daredevils Vs Rajasthan Royals
Date : April 19, 2009
Time: 8:30 PM
Ground: Delhi

>4. Kolkata Knight Riders Vs Deccan Chargers
Date : April 20, 2009
Time: 4:00 PM
Ground: Kolkata

>5. Mumbai Indians Vs Bangalore Royal Challengers
Date : April 20, 2009
Time: 8:00 PM
Ground: Mumbai

>6. Rajasthan Royals Vs Kings XI Punjab
Date : April 21, 2009
Time: 8:00 PM
Ground: Jaipur

>7. Deccan Chargers Vs Delhi Daredevils
Date : April 22, 2009
Time: 8:00 PM
Ground: Hyderabad

>8. Chennai Super Kings Vs Mumbai Indians
Date : April 23, 2009
Time: 8:00 PM
Ground: Chennai

>9. Deccan Chargers Vs Rajasthan Royals
Date : April 24, 2009
Time: 8:00 PM
Ground: Hyderabad

>10. Kings XI Punjab Vs Mumbai Indians
Date : April 25, 2009
Time: 8:00 PM
Ground: Mohali

>11. Bangalore Royal Challengers Vs Rajasthan Royals
Date : April 26, 2009
Time: 8:00 PM
Ground: Bangalore

>12. Chennai Super Kings Vs Kolkata Knight Riders
Date : April 26, 2009
Time: 4:00 PM
Ground: Chennai

>13. Mumbai Indians Vs Deccan Chargers
Date : April 27, 2009
Time: 8:00 PM
Ground: Mumbai

>14. Kings XI Punjab Vs Delhi Daredevils
Date : April 27, 2009
Time: 4:00 PM
Ground: Mohali

>15. Bangalore Royal Challengers Vs Chennai Super Kings
Date : April 28, 2009
Time: 8:00 PM
Ground: Bangalore

>16. Kolkata Knight Riders Vs Mumbai Indians
Date : April 29, 2009
Time: 8:00 PM
Ground: Kolkata

>17. Delhi Daredevils Vs Bangalore Royal Challengers .
Date : April 30, 2009
Time: 8:00 PM
Ground: Delhi

>18. Deccan Chargers Vs Kings XI Punjab
Date : May 1, 2009
Time: 8:00 PM
Ground: Hyderabad

>19. Rajasthan Royals Vs Kolkata Knight Riders
Date : May 1, 2009
Time: 4:00 PM
Ground: Jaipur

>20. Chennai Super Kings Vs Delhi Daredevils
Date : May 2, 2009
Time: 8:00 PM
Ground: Chennai

>21. Bangalore Royal Challengers Vs Deccan Chargers
Date : May 3, 2009
Time: 4:00 PM
Ground: Bangalore

>22. Kings XI Punjab Vs Kolkata Knight Riders
Date : May 3, 2009
Time: 8:00 PM
Ground: Mohali

>23. Mumbai Indians Vs Delhi Daredevils
Date : May 4, 2009
Time:4:00 PM
Ground: Mumbai

>24. Rajasthan Royals Vs Chennai Super Kings
Date : May 4, 2009
Time: 8:00 PM
Ground: Jaipur

>25. Bangalore Royal Challengers Vs Kings XI Punjab
Date : May 5, 2009
Time:8:00 PM
Ground: Bangalore

>26. Chennai Super Kings Vs Deccan Chargers
Date : May 6, 2009
Time: 8:00 PM
Ground: Chennai

>27. Mumbai Indians Vs Rajasthan Royals
Date : May 7, 2009
Time: 8:00 PM
Ground: Mumbai

>28. Delhi Daredevils Vs Chennai Super Kings
Date : May 8, 2009
Time: 4:00 PM
Ground: Delhi

>29. Kolkata Knight Riders Vs Bangalore Royal Challengers
Date : May 8, 2009
Time: 8:00 PM
Ground: Kolkata

>30. Rajasthan Royals Vs Deccan Chargers
Date : May 9, 2009
Time:8:00 PM
Ground: Jaipur

>31. Chennai Super Kings Vs Kings XI Punjab
Date : May 10, 2009
Time: 8:00 PM
Ground: Chennai

>32. Deccan Chargers Vs Kolkata Knight Riders
Date : May 11, 2009
Time: 4:00 PM
Ground: Hyderabad

>33. Rajasthan Royals vs Delhi Daredevils
Date : May 11, 2009
Time: 8:00 PM
Ground: Jaipur

>34. Kings XI Punjab Vs Bangalore Royal Challengers
Date : May 12, 2009
Time: 8:00 PM
Ground: Mohali

>35. Kolkata Knight Riders Vs Delhi Daredevils
Date : May 13, 2009
Time: 8:00 PM
Ground: Kolkata

>36. Mumbai Indians Vs Chennai Super Kings
Date : May 14, 2009
Time: 8:00 PM
Ground: Mumbai

>37. Delhi Daredevils Vs Deccan Chargers
Date : May 15, 2009
Time: 8:00 PM
Ground: Delhi

>38. Mumbai Indians Vs Kolkata Knight Riders
Date : May 16, 2009
Time: 8:00 PM
Ground: Mumbai

>39. Delhi Daredevils Vs Kings XI Punjab
Date : May 17, 2009
Time: 8:00 PM
Ground: Delhi

>40. Rajasthan Royals Vs Bangalore Royal Challengers
Date : May 17, 2009
Time: 4:00 PM
Ground: Jaipur

>41. Deccan Chargers Vs Mumbai Indians
Date : May 18, 2009
Time: 8:00 PM
Ground: Hyderabad

>42. Kolkata Knight Riders Vs Chennai Super Kings
Date : May 18, 2009
Time: 4:00 PM
Ground: Kolkata

>43. Bangalore Royal Challengers Vs Delhi Daredevils
Date : May 19, 2009
Time: 8:00 PM
Ground: Bangalore

>44. Kolkata Knight Riders Vs Rajasthan Royals
Date : May 20, 2009
Time: 8:00 PM
Ground: Kolkata

>45. Mumbai Indians Vs Kings XI Punjab
Date : May 21, 2009
Time: 4:00 PM
Ground: Mumbai

>46. Chennai Super Kings Vs Bangalore Royal Challengers
Date : May 21, 2009
Time: 8:00 PM
Ground: Chennai

>47. Delhi Daredevils Vs Kolkata Knight Riders
Date : May 22, 2009
Time: 8:00 PM
Ground: Delhi

>48. Kings XI Punjab Vs Deccan Chargers
Date : May 23, 2009
Time: 8:00 PM
Ground: Mohali

>49. Delhi Daredevils Vs Mumbai Indians
Date : May 24, 2009
Time: 8:00 PM
Ground: Delhi

>50. Chennai Super Kings Vs Rajasthan Royals
Date : May 24, 2009
Time: 4:00 PM
Ground: Chennai

>51. Deccan Chargers Vs Bangalore Royal Challengers
Date : May 25, 2009
Time: 4:00 PM
Ground: Hyderabad

>52. Kolkata Knight Riders Vs Kings XI Punjab
Date : May 25, 2009
Time: 8:00 PM
Ground: Kolkata

>53. Rajasthan Royals Vs Mumbai Indians
Date : May 26, 2009
Time: 8:00 PM
Ground: Jaipur

>54. Deccan Chargers Vs Chennai Super Kings
Date : May 27, 2009
Time: 8:00 PM
Ground: Hyderabad

>55. Bangalore Royal Challengers Vs Mumbai Indians
Date : May 28, 2009
Time: 4:00 PM
Ground: Bangalore

>56. Kings XI Punjab Vs Rajasthan Royals
Date : May 28, 2009
Time: 8:00 PM
Ground: Mohali

>May 29 is the day For Rest

>1st semi-final
Date : May 30, 2009
Time: 8:00 PM
Ground: Mumbai

>2nd semi-final
Date : May 31, 2009
Time: 8:00 PM
Ground: Mumbai

>$$$ Final $$$
Date : June 1, 2009
Time: 8:00 PM
Ground: Mumbai

TRICK TO WRITE TABLE OF 13 EASILY

2009-02-05T09:17:00.001-08:00

like 13 tables s written by writing tables of 1 and 3 seperately next to each other..
1 3
2 6
3 9
4 12 = 1 is carried to 4 = becomes 5 2
5 15 = 1 carried to 5 = 6 5
similarly
6 18 = 76
7 21 = 91
8 24 = 104
9 27 = 117
10 30 = 130

similarly it can be done for any number tables.

TRICK TO WRITE TABLE OF 13 EASILY

2009-02-05T09:17:00.000-08:00

Convert 1 to 9 = 100

2009-01-23T07:40:00.000-08:00

Convert 1 to 9 = 100
Convert the numbers 1 to 9 which will results to "100", by inserting any of arithmetic operations (+ - * /) into the string of above numbers.
And one more interesting thing is by keeping the numbers in the above order i.e. 123456789..

there are many solutions to above problem. if u have any plz write in the comment ......

One is: 1+2+3-4+5+6+78+9

others are

123+45-67+8-9=100

12+3+4-56/7+89=100

1+2+3+4+5+6+7+8*9=100

-1 + (2*3*4) + (5*6)+(7*8) - 9 =100

1*2+3+45+67-8-9=100

(1+2+3+4)*5+67-(8+9)=100

if u have any plz write in the comment ....

Simple trick to remember table of 19

2009-01-23T07:39:00.002-08:00

Simple trick to remember table of 19
The first digit is increamenting by 2 and second is decrementing by 1
19 * 01 = 019
19 * 02 = 038
19 * 03 = 057
19 * 04 = 076
19 * 05 = 095
19 * 06 = 114
19 * 07 = 133
19 * 08 = 152
19 * 09 = 171
19 * 10 = 190

trick to remember table of 29

2009-01-23T07:39:00.001-08:00

for 29 units digit decreases by 1 and tens digit increases by 3.
29 * 1 = 029
29 * 2 = 058
29 * 3 = 087
29 * 4 = 116
29 * 5 = 145
29 * 6 = 174
29 * 7 = 203
29 * 8 = 232
29 * 9 = 261
29 *10 = 290

find square of a number between 50 and 60

2009-01-23T07:38:00.001-08:00

find square of a number between 50 and 60
for example......
56^2=3136
57^2=3249
58^2=3364

there is a 2 steps trick to get the ans
1) add the digit at the units place to 25 and write the sum
2) then calculate the square of units place digit and write it

eg in case of 56^2
we have 25+6=31
and square of 6 is 36
hence the result is 3136

MAGIC OF MATHS

2009-01-23T07:37:00.000-08:00

111/1+1+1 = 37
222/2+2+2 = 37
333/3+3+3 = 37
444/4+4+4 = 37
555/5+5+5=37
666/6+6+6=37
777/7+7+7=37
888/8+8+8=37
999/9+9+9=37

multiply any no with 9,99,999,9999 & so on easily

2009-01-23T06:12:00.000-08:00

example1 - 18 * 99
step 1- put 2 zeros after 18 (as we have to mul it by 99, and 99 has 2 digits)

it becomes 1800 now

step 2- now subtract 18 from 1800
ans is 1782

example2- 482*9999

step1- put 4 zeros after 482 (as we have to mul 482 by 9999, and 9999 has 4 digits)

it becomes 4820000

step 2- subtract 482 from 4820000

ans is 4819518