SQUARE ROOT TRICKS

Q.HOW TO FIND OUT SQUARE ROOT OF TWO DIGIT NO. QUICKLY ?
TRICK:

EXAMPLE: (56)²=?
AS YOU KNOW FORMULA OF (a+b)²=a²+2ab+b²

so,now what we have to do...in that same formula we have to implement but instead of '+' sign replace by'/' which means two different terms.
Now,
the new formula is (a/b)²=a²/2ab/b²
Here a= 5; b=6
so, (5/6)²=5²/2*5*6/6²
=25/60/36
now add the 6 of 60 with 25 which will become 25+6=31
and in 60, there is left '0' only.
now, add the 3 of 36 with 0 which is left on 60 after adding 6 with 25. so 0+3=3
now, 6 is left in 36 .
so , the new no. are after adding and left = 31/3/6
Now, remove all slash'/' and the result is 3136 which is the sqaure root of 56.

DO MORE AND PRACTICE WITH  DIFFERENT NO.

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MULITPILCATION TRICK FOR NUMBER 11

HOW TO FIND OUT MULTIPLICATION RESULT QUICKLY WHEN TWO DIGITS ARE MULTIPLIED WITH 11:

TRICK:

For example,: 12*11=?

Do what write 1 and 2 as it is and write the result of the sum of 1+2=3 between 1 and 2.

RESULT OF 12*11= 132

For example : 32*11=? 

DO SAME THINGS WRITE 5 AND 6 AS IT IS AND WRITE THE RESULT OF 3+2=5 BETWEEN 3 AND 2.

RESULT OF 32*11= 352.

For example: 56*11=?

In that case, what we have to do we have to follow same procedure but only one thing we have to do after adding 5+6=11. the '1' of '11' is also be added by 5. And 5 will become 6.

RESULT = 616.

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