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Start learning 50% faster. Sign in nowGiven series is 3, 6, 12, ... Here, a = 3, r = 2 Sum of n numbers = Sn= 765 As we know that, Sum of n terms of GP = Sn = a(rn – 1)/(r – 1); where r >1 Sn = 765 = 3 × (2n – 1) ⇒ 255 = (2n – 1) ⇒ 2n = 256 ⇒ 2n = 28 ⇒ n = 8
Simplify the following expression:
288 ÷ 12 x 6 + 56 x √4 - 676 ÷ 4
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