CBSE Class 11 Mathematics Chapter 7 Permutations and Combinations Multiple Choice Questions with Answers. MCQ Class 11 Mathematics Permutations and Combinations with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 11 Mathematics Permutations and Combinations MCQs with Answers to know their preparation level.
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MCQ Class 11 Mathematics Permutations and Combinations with Answers - Set - 5
Question 1:
How many 3-letter words with or without meaning, can be formed out of the letters of the word, LOGARITHMS, if repetition of letters is not allowed
(a) 720
(b) 420
(c) 5040
(d) None of these
Correct Answer – (D)
Question 2 :
The letters of the word COCHIN are permuted and all the permutations are arranged in an alphabetical order as in an English dictionary.
The number of words that appear before the word COCHIN is
(a) 36
(b) 96
(c) 66
(d) 76
Correct Answer – (B)
Question 3 :
If nPr = nPr + 1 and nCr = nC – 1, then the values of n and r are
(a) n = 3, r = 3
(b) n = 3, r = 2
(c) n = 2, r = 3
(d) n = 2, r = 2
Correct Answer – (B)
Question 4 :
If 10Cx= 10Cx + 4, find the value of x.
(a) 5
(b) 4
(c) 3
(d) 2
Correct Answer – (C)
Question 5 :
At an election, a voter may vote for any number of candidates, not greater than the number to be elected. There are 10 candidates and 4 are of be selected, if a voter votes for at least one candidate, then the number of ways in which he can vote is
(a) 5040
(b) 6210
(c) 385
(d) 1110
Correct Answer – (C)
MCQ Class 11 Mathematics Permutations and Combinations with Answers
Question 6 :
Six boys and six girls sit along a line alternately in x ways and along a circle (again alternatively in y ways), then
(a) x = y
(b) y = 12x
(c) x = 10y
(d) x = 12y
Correct Answer – (D)
Question 7 :
The straight lines l1, l2 and l3 are parallel and lie in the same plane. A total numbers of m points are taken on l1; n points on l2; k points on l3.
The maximum number of triangles formed with vertices at these points are
(a) (m + n + k)C3
(b) (m + n + k)C3 – mC3 – nC3 – kC3
(c) mC3 + nC3 + kC3
(d) mC3 × nC3 × kC3
Correct Answer – (B)
Question 8 :
The number of ways of distributing 8 identical balls in 3 distinct boxes so that none of the boxes is empty is
(a) 8C3
(b) 21
(c) 38
(d) 5
Correct Answer – (B)
Question 9 :
If 30Cr+2 = 30Cr –2, then r equals:
(a) 8
(b) 15
(c) 30
(d) 32
Correct Answer – (B)
Question 10 :
If the letters of the word SACHIN are arranged in all possible ways and these words are written out as in dictionary, then the word SACHIN appears at serial number is
(a) 601
(b) 600
(c) 603
(d) 602
Correct Answer – (A)
- NCERT Solutions Class 11 Mathematics Permutations and Combinations with Answers : Exercise 7.1
- NCERT Solutions Class 11 Mathematics Permutations and Combinations with Answers : Exercise 7.2
- NCERT Solutions Class 11 Mathematics Permutations and Combinations with Answers : Exercise 7.3
- NCERT Solutions Class 11 Mathematics Permutations and Combinations with Answers : Exercise 7.4
- NCERT Solutions Class 11 Mathematics Permutations and Combinations with Answers : Exercise 7 Misc
- NCERT Solutions Class 11 Mathematics Textbook download
