# Permutation and combination

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Permutation and combination - Topic Wise Multiple Choice Questions (MCQ)

Topic Wise Permutation and Combination MCQ for competitive exam Practice Multiple Choice Questions for Engg Bank JEE CET Entrance Online Test

1 )

The least positive integer n for which n–1C5 + n–1C6 < nC7 is

12
14
15
18

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2 )

n books are arranged on a shelf so that two particular books are not next to each other, There were 480 arrangements altogether. Then the number of books on the shelf is

5
6
10
8

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3 )

The sum of all possible numbers greater than 10000 formed by using the digits from {1, 3, 5, 7, 9} is

6666600
66666600
666660
666600

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4 )

How many words can be formed by taking four different letters of the word MATHEMATICS?

756
1680
2454
18

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5 )

If an = nr=0  [1 / (rCn)], then nr=0 [r / (rCn)] equals _____

Select Correct Option from following

(a) (n – 1) an                   (b) n an

(c) (1/2)n an                    (d) None of these

a
b
c
d

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