Q3 of 105 Page 152

Which of the following are GP? If they are in GP. Write three more terms?

4, 8, 16,….

Here first term is (a) = 4

r1 =


r2 =


Common ratios are equal so the given series is in GP.


a4 = a r3 = 4×23 = 4×8 = 32


a5 = a r4 = 4×24 = 4×16 = 64


a6 = a r5 = 4×25 = 4×32 = 128


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