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If 64,27,36 are the Pth,Qth and Rth terms of a G.P., then
P+2Q is equal to
(a) R (b) 2R (c) 3R (d) 4R
Asked by aliencpr31 | 31 Jul, 2019, 10:55: AM
Expert Answer
We know that,
nth term of a G.P is given by,
tn = arn-1
According to the question,
a. rP-1 = 64 ... (1)
a. rQ-1 = 27 ... (2)
a. rR-1 = 36 ... (3)
To find: P + 2Q = ?
Hint :
P is having a coefficient 1 , Q is having a coefficient 2 and from the options
if we take 3R , so the cofficient of R is 3.
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