MCQs Questions for Class 11 Maths Chapter 7 Permutations and Combinations
In this 21st century, Multiple Choice Questions (MCQs) play a vital role to prepare for a competitive examination. CBSE board has also brought a major change in its board exam patterns. In most of the competitive examinations, only MCQ Questions are asked.
In future, if you want to prepare for competitive examination, then you should focus on the MCQs questions. Thus, let’s solve these MCQs questions to make our foundation strong.
In this post, you will find 16 MCQs questions for class 11 maths chapter 7 permutations and combinations.
MCQs Questions for Class 11 Maths Chapter 7 Permutations and Combinations
1. A boy has 2 pencil and 3
erasers. In how many ways can he choose a pencil and an eraser?
(a) 5
(b) 6
(c) 8
(d) 9
Answer: b
2. The number of combination of
n distinct objects, taken r at a time, is given by
(a) n/2Cr
(b) n/2Cr/2
(c) nCr/2
(d) nCr
Answer: d
3. If there are 4 paths to travel from Delhi to Lucknow, then in
how many ways a person can travel from Delhi to Lucknow and came back to Delhi?
(a) 4
(b) 8
(c) 12
(d) 16
Answer: d
4. Four dice are rolled. The number of possible outcomes in
which at least one dice show 2 is
(a) 1296
(b) 671
(c) 625
(d) 585
Answer: b
5. Find the number of 5 letter words which can be formed from
the word PULSE without repetition.
(a) 20
(b) 60
(c) 120
(d) 240
Answer: c
6. If repetition of the digits is allowed, then the number of
even natural numbers having three digits is
(a) 250
(b) 350
(c) 450
(d) 550
Answer: c
7. How many 5-digit numbers are possible without repetition of
digits?
(a) 27216
(b) 50400
(c) 100000
(d) 90000
Answer: a
8. The number of ways in which 8 distinct toys can be
distributed among 5 children is
(a) 58
(b) 85
(c) 8P5
(d) 5P5
Answer: a
9. A passcode is made of 5 digits. How many maximum numbers of
ways incorrect passcode is entered?
(a) 27215
(b) 50399
(c) 99999
(d) 89999
Answer: c
10. The value of P(n, n – 1) is
(a) n
(b) 2n
(c) n!
(d) 2n!
Answer: c
11. nPr = nCr × ______________
(a) r!
(b) 1/r!
(c) n!
(d) 1/n!
Answer: a
12. Out of 5 apples, 10 mangoes and 13 oranges, any 15 fruits are
to be distributed among 2 persons. Then the total number of ways of
distribution is
(a) 1800
(b) 1080
(c) 1008
(d) 8001
Answer: c
13. If nC2 = nC3, then the value of n is
(a) 2
(b) 3
(c) 5
(d) 6
Answer: c
14. The number of ways in which the letters of the word
ASSASSINATION be arranged so that all the S are together is
(a) 152100
(b) 1512
(c) 15120
(d) 151200
Answer: d
15. If 14Cr = 14 and 15Cr = 15, then find the value of 14Cr-1.
(a) 1
(b) 14
(c) 15
(d) 3
Answer: a
16. If 2nC3 : nC3 = 9 : 1, then fine the value of n.
(a) 7
(b) 14
(c) 28
(d) 32
Answer: b