Subject
Quantitative Aptitude
Topic
Probability
A box contains 5 detective and 15 non-detective bulbs. Two bulbs are chosen at random. Find the probability that both the bulbs are non-defective.
A box contains 5 detective and 15 non-detective bulbs. Two bulbs are chosen at random. Find the probability that both the bulbs are non-defective.
ক)
5/19খ)
3/20গ)
21/38ঘ)
None of theseExplanation
n(S) = = 190 n(E) = = 105 Therefore, P(E) = 105/190 = 21/38Related questions
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