UPSC Government Jobs Exams Category

Determine the number of 5 cards combinations out of a deck of 52 cards if there is atleast one ace in each combination

Read Solution (Total 1)

4C1*48C4

total 52 cards
in that we took 1 from 4 ace = 1
another 4 took from rest of 48= 4
so 1 + 4 = 5
that is nothing but a 4C1*48C4
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UPSC Other Question

An examination paper consists of 12 questions divided in to parts A and B .Part A contains 7 questions and part B contains 5 questions. A candidate is required to attempt 8 questions selecting at least 3 from each part. In how many ways can the candidate select the questions? In how many ways a committee of 5 members can be selected from 6 men and 5 ladies consisting of 3 men and 2 ladies?