Question

2) The 3rd terın of a GP is 12 and 6th term is 96. Find the sum of
first 10 terms

Answer 1

Answer:

ar² = 12 and ar⁵ = 96

On solving we get r = 2 and a = 3

Sn = a (r^n - 1)/(r - 1)

= 3 (2¹⁰ - 1) / (2 - 1)

= 3 (1023)

= 3069