Question

If x, 2x + 2, 3x + 3, are first 3 terms of a G.P. then its 4^th term is –

• A. 27
• B. –27
• C. –27/2
• D. 27/2

Answer 1

Answer: (C)

–27/2

Answer 2

(2x + 2)² = x(3x + 3)  x = –1, –4  x = – 4 (Qx น –1)

\ Nos are – 4, – 6, – 9

\ a = – 4, r = 3/2

Hence T₄ = (– 4) (3/2)³ = –27/2