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    				| 1. | In a GP, if the fourth terms is the square of the second term, then the relation between the first term and common ratio is ____.A. `a =r`B. `a = 2r`C. `2a = r`D. `r^(2) = a` | 
| Answer» Correct Answer - A `t_4 = t_2^(2)` `rArr ar^(3) = (ar)^(2) rArr ar^(3) = a^(2)r^(2) rArr r =a`. | |