Questions
Let be in A.P and be in H.P. If and
then is
detailed solution
Correct option is D
Let d be the common difference of the A.P…., then 3=a10=2+9d ⇒ d=1/9∴ a1=2+3d=7/3Next, let D be the common difference of the A.P.1h1,1h2,…,1h10 Then 13=1h10=12+9D⇒D=−154∴ 1h7=1h1+6D=718⇒h7=187Hence, a4h7=(7/3)(18/7)=6.Similar Questions
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