If A * B = B and A != 1, what must B be?

Type: MCQ • Marks: 1

A. 1

B. 0

C. 10

D. 2

Explanation

If A * B = B and A != 1, then A*B - B = 0 => B(A - 1) = 0. Since A != 1, B must be 0.

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Class 7th Ganita Prakash 1

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