SQUARE OF ANY TWO DIGIT NUMBER IN 5 SECONDS

LET US UNDERSTAND THE TRICK WITH THE HELP OF AN EXAMPLE

Q. Find  32²

Step 1:-Square of unit digit 2²=4

Step 2:-Multiply both the digits of the number and double it 3×2×2=12.Retain 2 while add carry 1 in step 3

Step 3:-Square of tens digit 3²=9.Now 9+1(carry)=10

Step 4:-Hence square is step3/step2/step1 that is 1024

Similarly

41²=16/8/1=1681

52²=25/20/4=2704

61²=36/12/1=3721

83²=64/48/9=6889

so simple....................................