Question

Q4) By what number should (1/2)^(-1) be multiplied
so that the product may be equal
to (7)^(-2).
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Answer 1

let the required number be x

According to the question:

1/2^(-1) * x = 7^(-2)

2 * x = 1/49

x = 1/49 ÷ 2

x = 1/98

Hence,the required number is 1/98

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I hope it will help you !!!!!