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GATE CS 2022: Discrete mathematics 4

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Question 1

There are 6 periods in each working day of a school. In how many ways can one organize 5 subjects such that each subject is allowed at least one period?

Question 2

In how many ways can 10 engineers and 4 doctors be seated at a round table if all the 4 doctors sit together?

Question 3

In how many ways can 8 similar rings be worn on 5 fingers of a hand?

Question 4

How many permutations of the word “CHANDRAYAN” is there?

Question 5

Calculate the number of ways of combination or selection of 11 players out of 20 players where A and B are always excluded.

Question 6

The number of integers between 1 and 500 (both inclusive) that are divisible by 3 or 5 or 7 is ______.

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GATE & PSU CS Discrete Mathematics

Jun 25GATE & PSU CS