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Question

The value of 64×78 calculated using binomial multiplication is


A

4996

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B

4992

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C

4996

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D

4969

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Solution

The correct option is B

4992


64×78 can be written as

(60+4)×(70+8)

=60×70+60×8+4×70+4×8

=4200+480+280+32

=4992


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