This question is from Series A Question paper of CSAT in UPSC Prelims 2022.
Q.77)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
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Негізгі бет UPSC CSE Prelims - CSAT 2022 Q.77)There are 9 cups...
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