Find three numbers in G.P. whose sum is 13 and the sum of whose squares is 91.

Explanation

To find three numbers in Geometric Progression (G.P.) whose sum is 13 and the sum of whose squares is 91, we can follow these steps:

### Step 1: Define the terms of the G.P.
Let the three numbers in G.P. be:
- First term: \( a \)
- Second term: \( ar \)
- Third term: \( ar^2 \)

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