A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that at least one bulb is good.

A box contains nine bulbs out of which 4 are defective. If four bulbs

1.	A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that at least one bulb is good.
A.	$\frac{{6}}{{63}}$$
B.	$\frac{{2}}{{63}}$$
C.	$\frac{{125}}{{126}}$$
D.	$\frac{{1}}{{126}}$$
Answer» D. $\frac{{1}}{{126}}$$

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A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that at least one bulb is good.

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