The product of first three terms of a G.P. is −1 and the common ratio is . The sum of these three terms is : 1. 2. 3. 4.

Question

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Let the first three terms of the G.P. be , a, ar. The product of the three terms is given as -1 ⇒ × a × ar = -1 ⇒ a3 = -1 ⇒ a = ⇒ a = -1. Substitute a = -1 and r = , we get : ⇒ , ⇒ ar = . The sum of the three terms is : Hence, option 4 is the correct option.

Mathematics

The product of first three terms of a G.P. is −1 and the common ratio is . The sum of these three terms is : 1. 2. 3. 4.

G.P.

Related Questions

How many terms of the G.P. 1, 4, 16, 64, …….. will make the sum 5461?
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8

Mathematics

The product of first three terms of a G.P. is −1 and the common ratio is . The sum of these three terms is : 1. 2. 3. 4.

G.P.

Related Questions

How many terms of the G.P. 1, 4, 16, 64, …….. will make the sum 5461?6978

How many terms of the G.P. 1, 4, 16, 64, …….. will make the sum 5461?
6
9
7
8