Posted by Amit on Wednesday, July 30, 2014 at 11:04pm.
if 4,2x4,......,64,21x+2 are the terms of GP . find the value of x ?

math  Reiny, Thursday, July 31, 2014 at 12:06am
if GP , then
(2x4)/4 = (21x+2)/64
128x256 = 84x + 8
44x = 264
x = 6
check:
4, 8, ... , 64, 128
YUP, common ratio of 2
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