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CBSE Class 11-science Answered

Find three terms of G.P. whose sum is 13 and sum of their whole squares is 91.
Asked by Topperlearning User | 25 Sep, 2017, 12:14: PM
answered-by-expert Expert Answer

Let the three terms of a G.P. be a, ar, ar2.

On squaring equation (1) on both sides, we get
On putting the value of a from equation (3) into equation (1), we get
Hence, the terms of this G.P. are 9, 3, 1 or 1, 3, 9.
Answered by | 25 Sep, 2017, 02:14: PM
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