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    				| 1. | If |r| gt 1, x = a + a/r + a/r^(2) + .......... infty, y = b - b/r + b/r^(2) - ......... infty and z = c + c/r^(2) + c/r^(4) + ...... infty, then the value of (xy)/z = | 
| Answer» ANSWER :C | |