निम्नलिखित प्रश्न में प्रश्न-चिन्ह (?) क...

निम्नलिखित प्रश्न में प्रश्न-चिन्ह (?) के स्थान पर क्या आना चाहिए?
`31^(7.5) 31^(3/2) xx 31^(-3) = (sqrt(31))^(?)`

A

`9/2`

B

6

C

`7/2`

D

4

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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