a) 4914
b) 3630
c) 3724
d) 3824
Answer: a
Explanation: Three possibilities: (1W+6M), (2W+5M), (3W+4M)
= (6C1 × 9C6) + (6C2 × 9C5) + (6C3 × 9C4)
= 4914
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