permutation related Q

Asked by  | 13th May, 2009, 12:27: AM

Expert Answer:

Exercises A,B,C consists  of 12,18 and 9  questions respectively

one question can be choosen from each exercise in  12 C1 18 C1 and 9 C1 ways

Total ways will be 12 C1 18 C1  9 C1 = 1944

Answered by  | 15th May, 2009, 11:49: AM

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