Question

Four persons A, B, C, D are appearing in an interview to get promotion.
Chances of A’s promotion are same as that of D. Chances of B’s promotion
are double that of A. Chances of C’s promotion are four times that of A.
[a] Find what is the probability that A gets promotion?
[b] Find the probability that A promotes or D promotes ?

Answer 1

1. a/b+c+d = 1/4 =0.25
2. a or d/b+c = 1/2 = 0.50

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