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Q.

Find the square of 26.

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a

696

b

676

c

636

d

606

answer is D.

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Detailed Solution

262 = (20+6)2 = 20(20+6) + 6(20+6)

= 202+ 20 x 6 + 6 x 20 + 62

= 400 + 120 + 120 + 36

= 676

Therefore, the square of 26 is 676. 

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