NCERT MOST IMPORTANT QUESTIONS CLASS – 11 | MATHS IMPORTANT QUESTIONS | CHAPTER – 7 | PERMUTATIONS AND COMBINATIONS | EDUGROWN |

In This Post we are providing Chapter-7 PERMUTATIONS AND COMBINATIONS NCERT MOST IMPORTANT QUESTIONS for Class 11 MATHS which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.

NCERT MOST IMPORTANT QUESTIONS ON PERMUTATIONS AND COMBINATIONS

1.In how many 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 colours.

Ans.No. of ways of selecting 9 balls

2.Find if

Ans.

Rejected. Because if we put the no. in the factorial is –ve.

3.If find

Ans.

4.What is

Ans.Is multiplication of consecutive natural number

5.If what is the value of

Ans. then

6.How many words, with or with not meaning each of 2 vowels and 3 consonants can be flamed from the letter of the word DAUGHTER?

Ans.In the word DAUGHTER There are 3 vowels and 5 consonants out of 3 vowels, 2 vowels can be selected in ways and 3 consonants can be selected in ways 5 letters 2 vowel and 3 consonant can be arranged in 5! Ways

Total no. of words

7.Convert the following products into factorials

Ans.

8.Evaluate

Ans.

9.Evaluate

Ans.

10.Find if

Ans.Given

11.Evaluate

Ans.

12.Convert into factorial 2.4.6.8.10.12

Ans.

13.How many words with or without meaning can be formed using all the letters of the word ‘EQUATION’ at a time so that vowels and consonants occur together

Ans. In the word ‘EQUATION’ there are 5 vowels [A.E.I.O.U.] and 3 consonants [Q.T.N]

Total no. of letters = 8

Arrangement of 5 vowels =