2008
Mathematics
JAMB
Find the number of ways of selecting 6 out of 10 subjects for an examination
A.
128
B.
216
C.
215
D.
210
Correct Answer: 210
Explanation
〖10 〗C6 =10!/((10-6)!6!)=10!/4!6!=(10×9×8×7×6!)/(4×3×2×1×6!)=210
〖10 〗C6 =10!/((10-6)!6!)=10!/4!6!=(10×9×8×7×6!)/(4×3×2×1×6!)=210THIS WEEK's
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