Question

Three boxes contain 50 parts each. one part in each box is defective. one part is selected at random from each of the three boxes.
a.) what is the probability that all three parts are non-defective?

b.) what is the probability that the part selected from box 1 is defective, and the parts selected from box 2 and 3 are non-defective?

c.) what is the probability that two parts are non-defective and one part is defective?

Answer 1

A. ) The probability of all 3 parts are non defective :-
48:3
B.) The probability that the part selected from box 1 is defective :-
1:1
The probability of the parts selected from box 2 and 3 are non defective :-
49:2
C.) The probability that two parts are non-defective and one part is defective :-
48:2 / 1:1
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