Q.

If a, b and c are three positive numbers in an arithmetic progression, then:

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a

ac>b2

b

b2>a+c

c

ab+bc2ac

d

ab+bc2ac

answer is D.

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Detailed Solution

Since, a, b, c, are in AP

1a,1b,1c are in H.P

 a+c22aca+c Since , AMHM=2aca+c

 b2aca+c   

 ab+bc2ac

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