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Question

The probability of selecting 2 one-rupee coins from a collection of 'a' one-rupee coins and 4 two-rupee coins is 1/3. Determine the probability of randomly choosing a two-rupee coin from a set consisting of (a + 4) one-rupee coins and 2a two-rupee coins.

A 6/11

B 5/11

C 11/14

D 15/19

E none of these

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