Q:
In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is:
Answer & Explanation
Answer: A) 21/46
Explanation: Let , S - sample space E - event of selecting 1 girl and 2 boys.
Then, n(S) = Number ways of selecting 3 students out of 25
=
= 2300.
n(E) = = 1050.
P(E) = n(E)/n(s) = 1050/2300 = 21/46
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