Q.
If log102,log102x+1 and log102x+3 are in A.P., then
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a
x = 0
b
x = 1
c
x=12log102
d
x=12log25
answer is D.
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Detailed Solution
2,2x+1,2x+3 are in G.P.⇒2x+12=22x+3⇒22x=5⇒x=12log25
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