Question on: JAMB Mathematics - 2008
Find the number of ways of selecting 6 out of 10 subjects for an examination
A
128
B
216
C
215
D
210
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Correct Option: D
(^{10}C_6 = \frac{10!}{(10-6)!6!}\
=\frac{10!}{4!6!}\
=\frac{10\times 9\times 8 \times 7 \times 6!}{4\times 3\times 2\times 1 \times 6!}\
=210)
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