1003041602

SubArea:

Probability

Level:

Project ID:

1003041602

Accepted:

Clonable:

Easy:

A box contains

50

transistors and

4

of them are lower quality. From all transistors

5

are selected at random for inspection. What is the probability that of lower quality is at most one of the selected transistors? Round the result to two decimal places.

\frac{(\binom{46}{5}) + (\binom{46}{4}) \cdot (\binom{4}{1})}{(\binom{50}{5})} ≐ 0.96

\frac{\frac{46!}{41!} + \frac{46!}{42!}}{\frac{50!}{45!}} ≐ 0.66

\frac{(\binom{46}{5}) + (\binom{46}{4})}{(\binom{50}{5})} ≐ 0.72

\frac{\frac{46!}{41!} + \frac{46!}{42!} \cdot \frac{4!}{3!}}{\frac{50!}{45!}} ≐ 0.71

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