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In a GP, the first term is 5 and the common ratio is 2. The eighth term is-

(1) 640 (2) 1280 (3) 256 (4) 160

March 22, 2024

Solution:

According to question, nth term

of a GP = ar^n-1

:. 8th term = 5*(2)^8-1 5*(2)⁷

= 5*128 = 640

Then the option is (1) 640