NCERT Class 11 Math Permutations and Combinations Chapter 6 MCQ Question Answer for Preparation of Exams. Here we Provide Class 11 Math Question Answer, Important Questions, MCQ for Various State Boards Students like CBSE, Haryana, uttar pradesh, mp and other state students.
Also Read : – Class 11 Math NCERT Solution
NCERT Class 11 Math Chapter 6 Permutations and Combinations MCQ Question Answer Solution.
Permutations and Combinations Class 11 Math Chapter 6 MCQ Question Answer
1. The value of x for which 1/7! + 1/8! = 1/x is :
(A) 4280
(B) 4480
(C) 5020
(D) None of the above
Answer
Ans. (B) 4480
2. If nC5 = nC7 , then the value of n is
(A) 8
(B) 10
(C) 12
(D) 35
Answer
Ans. (C) 12
3. If nC8 = nC9 , then the value of nC17 is :
(A) 0
(B) 1
(C) 1224
(D) None of the above
Answer
Ans. (B) 1
4. Value of 12C3 is:
(A) 2112
(B) 220
(C) 36
(D) None of the above.
Answer
Ans. (B) 220
5. The number of permutation of the letters of the word ‘ALLAHABAD’ are :
(A) 9!
(B) 9! /2!
(C) 9! /4! 2!
(D) 9! /2! 2!
Answer
Ans. (C) 9! /4! 2!
6. How many three digit numbers can be formed from the digits 1, 2, 3, 4 when repetition of digits is not allowed?
(A) 8
(B) 16
(C) 24
(D) 12
Answer
Ans. (C) 24