In how many ways can a student select 2 subject... - JAMB Mathematics 2013 Question
In how many ways can a student select 2 subjects from 5 subjects?
A
\(\frac{5!}{3!}\)
B
\(\frac{5!}{2!2!}\)
C
\(\frac{5!}{2!3!}\)
D
\(\frac{5!}{2!}\)
correct option: c
A student can select 2 subjects from 5 subjects in;
5C3 ways, i.e. = \(\frac{5!}{2!(5 - 2)!}\)
= \(\frac{5!}{2!3!}\)
5C3 ways, i.e. = \(\frac{5!}{2!(5 - 2)!}\)
= \(\frac{5!}{2!3!}\)
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