EASY
11th CBSE
IMPORTANT
Earn 100

From a class of 14 boys and 10 girls, 10 students are to be chosen for a competition, at least including 4 boys and 4 girls. The 2 girls who won the prizes last year should be included. In how many ways can the selection be made?

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Important Questions on Combinations

EASY
11th CBSE
IMPORTANT
Senior Secondary School Mathematics FOR CLASS 11>Chapter 9 - Combinations>EXERCISE 9B>Q 19
Find the number of 5-card combinations out of a deck of 52 cards if at least one of the five cards has to be a king.
EASY
11th CBSE
IMPORTANT
Senior Secondary School Mathematics FOR CLASS 11>Chapter 9 - Combinations>EXERCISE 9B>Q 20

Find the number of diagonals of a hexagon.

EASY
11th CBSE
IMPORTANT
Senior Secondary School Mathematics FOR CLASS 11>Chapter 9 - Combinations>EXERCISE 9B>Q 20

Find the number of diagonals of a decagon.

EASY
11th CBSE
IMPORTANT
Senior Secondary School Mathematics FOR CLASS 11>Chapter 9 - Combinations>EXERCISE 9B>Q 20

Find the number of diagonals of a polygon of 18 sides.

EASY
11th CBSE
IMPORTANT
Senior Secondary School Mathematics FOR CLASS 11>Chapter 9 - Combinations>EXERCISE 9B>Q 21

How many triangles can be obtained by joining 12 points, four of which are collinear?

EASY
11th CBSE
IMPORTANT
Senior Secondary School Mathematics FOR CLASS 11>Chapter 9 - Combinations>EXERCISE 9B>Q 22
How many triangles can be formed in a decagon?
EASY
11th CBSE
IMPORTANT
Senior Secondary School Mathematics FOR CLASS 11>Chapter 9 - Combinations>EXERCISE 9B>Q 23

How many different selections of 4 books can be made from 10 different books, if there is no restriction?

EASY
11th CBSE
IMPORTANT
Senior Secondary School Mathematics FOR CLASS 11>Chapter 9 - Combinations>EXERCISE 9B>Q 23

How many different selections of 4 books can be made from 10 different books, if two particular books are always selected?