1.

922 – 82 = ……………….. A) 1400 B) 1000 C) 8400 D) 8500

Answer»

Correct option is  C) 8400

Correct option is (C) 8400

\(92^2-8^2=(92-8)(92+8)\)

= 84 \(\times\) 100 = 8400.



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