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A bag contains 2n coins out of which n-1...

A bag contains 2n coins out of which n-1 are unfair with heads on both sides and the remaining are fair. One coin is picked from the bag at random and tossed. If the probability that head falls in the toss is `41/56`, then the number of unfair coins in the bag is

A

18

B

15

C

13

D

14

Text Solution

Verified by Experts

The correct Answer is:
C
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