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15. In an increasing G.P., the sum of the first and the last term is 66, the product of the second and the last but one term is 128, and the sum of all the terms is 126, then the number of terms in the progression is equal to |
| Answer» 15. In an increasing G.P., the sum of the first and the last term is 66, the product of the second and the last but one term is 128, and the sum of all the terms is 126, then the number of terms in the progression is equal to | |