CSATPermutation, Combination & ProbabilityPermutation and Combination2022

There are 9 cups placed on a table arranged in equal number of rows and columns out of which 6 cups contain coffee and 3 cups contain tea. In how many ways can they be arranged so that each row should contain at least one cup of coffee?

A

18

B

27

C

54

D

81

Correct Answer: Option D

Explanation

1. **Ana

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