1.

A problem in mathematics is given to three students A, B and C. If the probability of A solving the problem is 1⁄2 and B not solving it is 1⁄4. The whole probability of the problem being solved is 63⁄64 then what is the probability of solving it?

A. 1⁄8
B. 1⁄64
C. 7⁄8
D. 1⁄2
Answer» D. 1⁄2


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