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Square Of Any 2 Digit Number

Rajiv Singh
01/09/2018 0 0

Square Of Any 2 Digit Number:

Let me explain this trick by taking examples:

67^2 = [6^2][7^2]+20*6*7 = 3649+840 = 4489

Similarly:
25^2 = [2^2][5^2]+20*2*5 = 425+200 = 625

Take one more example:
97^2 = [9^2][7^2]+20*9*7 = 8149+1260 = 9409

Here [] is not an operation, it is only a separation between initial 2 and last 2 digits.

Example:

Here an extra case arises
Consider the following examples for that:
91^2 = [9^2][1^2]+20*9*1 = 8101+180 = 8281

 

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