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The first two terms of a G.P add up to 1...

The first two terms of a G.P add up to 12 . The sum of the third and the fourth terms is 48. If the terms of the G.P. are alternately positive and negative then the first term is

A

`-4`

B

`-12`

C

12

D

4

Text Solution

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The correct Answer is:
B
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