83 × 77 = ………………… A) 3691 B) 6391C) 6091 D) 1391

1.	83 × 77 = ………………… A) 3691 B) 6391C) 6091 D) 1391
Answer» Correct option is B) 6391 Correct option is (B) 6391 83 \(\times\) 77 = (80+3) (80-3) = \(80^2-3^2\) = 6400 - 9 = 6391.

Answer»

Correct option is B) 6391

Correct option is (B) 6391

83 \(\times\) 77 = (80+3) (80-3)

= \(80^2-3^2\) = 6400 - 9 = 6391.

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