RBI Assistant 2016 Pattern Based

Question 84

$$11^2 + 13^2 + 15^2 + 17^2 - 12^2 - 14^2$$ = ?

Solution

The given expression can be simplified as:

121 + 169 + 225 + 289 - 144 - 196
= 804 - 340 = 464

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