Hello, BabyMilo!

A box of 50 fuses contains five which are defective.

If I take a sample of 20 out of the box, calculate the probability

of there being at least two defective fuses.

There are: . possible sampes.

We have: .

The opposite of "at least 2 bad" is "0 bad or 1 bad".

0 bad, 20 good: .

1 bad, 19 good: .

. . Hence: .

Therefore: .

can crank it out . . . I'll wait in the car.You

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