2007
Mathematics
67ca00ce0c643c71d77dee1f
In how many ways can 6 subjects be selected from 10 subjects for an examination
A.
218
B.
216
C.
215
D.
210
Correct Answer: 210
Explanation
10C6=10!/((10-6)!6!)=10!/4!6!=((10×9×8×7×6!))/(4×3×2×1×6!)=210
10C6=10!/((10-6)!6!)=10!/4!6!=((10×9×8×7×6!))/(4×3×2×1×6!)=210THIS WEEK's
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