A football team is to be consisted out of 14 boys . In how many ways the team can be chosen so that the owner of the ball is always in the team?

A 135
B 143
C 169
D 286

Correct Answer: 286

যেহেত 14 জন বালক থেকে বলের মালিক অথাৎ 1 জনের সবদা অন্তভুক্তি থাকবেতাই বাকি 13 জন থেকে 10 জন সাজাোর উপায় হল :13C10 = ∟13∟10∟13 - 10 = 13×12×11×∟10∟10×3×2×1 = 286 উপায়ে।
Bissoy MCQ
#গণিত #Bangladesh Bank #Assistant Director (General) 06.07.18

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