Mathematics
Medium
Question
A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that all the four bulbs are defective.
A
62/63
B
125/126
C
1/63
D
1/126
✓ Official correct answer
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A
62/63
No member explanations yet for this option.
B
125/126
No member explanations yet for this option.
C
1/63
No member explanations yet for this option.
D
1/126
No member explanations yet for this option.