EASY
11th CBSE
IMPORTANT
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Find the number of diagonals in a decagon.

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Important Questions on Combinations

EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 17 - Combinations>EXERCISE 17.2>Q 21
Find the number of triangles formed in a decagon.
EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 17 - Combinations>EXERCISE 17.2>Q 22
Determine the number of  5 cards combinations out of a deck of 52 cards if at least one of the 5 cards has to be a king?
MEDIUM
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 17 - Combinations>EXERCISE 17.2>Q 23
We wish to select 6 persons from 8, but if the person A is chosen, then B must be chosen. In how many ways can the selection be made?
EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 17 - Combinations>EXERCISE 17.2>Q 24
In how many ways can a team of 3 boys and 3 girls be selected from 5 boys and 4girls?
EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 17 - Combinations>EXERCISE 17.2>Q 25
Find the number of ways of selecting 9 balls from 6 red balls, 5 white balls and 5 blue balls if each selection consists of 3 balls of each colour.
EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 17 - Combinations>EXERCISE 17.2>Q 26
Determine the number of 5 cards combinations out of a deck of 52 cards if there is exactly one ace in each combination.
EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 17 - Combinations>EXERCISE 17.2>Q 27
In how many ways can one select a cricket team of eleven from 17 players in which only 5 persons can bowl if each cricket team of 11 must include exactly 4 bowlers?
EASY
11th CBSE
IMPORTANT
MATHEMATICS for CLASS XI>Chapter 17 - Combinations>EXERCISE 17.2>Q 28
A bag contains 5 black and 6 red balls. Determine the number of ways in which 2 black and 3 red balls can be selected.