Question on: JAMB Mathematics - 2007
In how many ways can 6 subjects be selected from 10 subjects for an examination
A
218
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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