In an examination paper, there are two groups each containing 4 questions. A candidate is required to attempt 5 questions but not more than 3 questions from any group. In how many ways can 5 questions be selected?
A. 24
B. 48
C. 96
D. 64
Answer: Option B
Solution(By Examveda Team)
5 questions can be selected in the following ways, 2 question from first group and 3 question from second group Or 3 question from first group and 2 question from second group. = (4C2 × 4C3) + (3C4 × 4C2) = 24 + 24= 48
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Comments ( 1 )
Related Questions on Permutation and Combination
A. 3! 4! 8! 4!
B. 3! 8!
C. 4! 4!
D. 8! 4! 4!
A. 7560,60,1680
B. 7890,120,650
C. 7650,200,4444
D. None of these
A. 8 × 9!
B. 8 × 8!
C. 7 × 9!
D. 9 × 8!
(4C2 × 4C3) + (4C3 × 4C2)