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Question

If three positive numbers are a,b,c are in AP with abc =4 , then minimum value of b is

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Solution

As we know that , AMGMSo considering three number a, b, c that are in AP as given . so a+b+c3abc13Given abc=1 so, a+b+c31or a+b+c3Now a,b,c are in AP so, 2b=a+c putting this we get, 3b3or b1 so minimum value of b is 1.

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