PERMUTATIONS, COMBINATIONS AND PROBABILITY MCQs Ch:07 Fsc First Year consist of 150+ Multiple Choice Questions. Prepare these mcqs for ECAT and examination. These mcqs are very helpful for preparing NTS and PPSC exams.
Q.1 The factorial of a positive integer n is n! =
(a) n(n-1)(n-2)(n- 3)...3.2.1
(b) (n-1)(n-2)(n-3)...3.2.1
(c) (n+ 1)n(n- 1)(n-2)(n-3)...3.2.1
(d) (n- 2)(n-3)...3.2.1
Q.2 The factorial of a positive integern is
(a) n! = n(n-1)!(n-2)!
(b) n!= n(n+2)!
(c) n! =n(n-2)!
(d) n! = n(n-1)!
(Gujranwala Board, 2007 )
Q.3 If n is any positive integer, then
(a) (n+1)! = (n+ 1)n!
(b) (n+1)! = (n+ 1)(n-1)!
(c) n! = n(n-2)!
(d) n! = n(n+ 1)!
Q.4 For a negative integer n, the factorial n!
(a) is unique
(b) is 0.
(c) does not exist
(d) is 1
Q.5 0! =
(a) 0
(b) 1
(c) -i
(d) 2
(Lahore Board, 2007)
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