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Question

Assertion :If G be the geometric mean between two distinct positive numbers a and b , then 1Ga+1Gb=1G Reason: Geometric mean G between a & b is ab

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
L.H.S=1Ga+1Gb, where G=ab
=1aba+1abb
=1a1(ba)1b1(ba)
=baab(ba)=1ab=1G=R.H.S
Assertion (A) is true followed by Reason (R).

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