Permutations and Combinations Test

Result

Permutations and Combinations Test - 27

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

If a,b,c,d,e are prime integers, then the number of divisors of ab²c² de excluding 1 as a factor , is

A
94

B
72

C
36

D
71

Solution
Question 2
4 / -1

Number of divisors of n = 38808 (except 1 and n ) is

A
70

B
68

C
72

D
74

Solution
Question 3
4 / -1

The sum of all positive divisors of 960 is

A
3048

B
3087

C
3047

D
2180

Solution
Question 4
4 / -1

The number of ways so that 3 men and 2 women can sit in a bus such that total total number of sitted men and women on each side is 3

A
5!

B

C

D
Question 5
4 / -1

A
(12,6)

B
(10,5)

C
(9,4)

D
(16,7)

Solution
Question 6
4 / -1

The number of diagonals in a octagon will be

A
28

B
20

C
10

D
16
Question 7
4 / -1

If a polygon has 44 diagonals, then the number of its sides are

A
7

B
11

C
8

D
None of these

Solution
Question 8
4 / -1

How many triangles can be formed by joining four points on a circle

A
4

B
6

C
8

D
10
Question 9
4 / -1

Let T_n denote the number of triangles which can be formed using the vertices of a regular polygon of n sides. If T_n+1 - T_n = 21, then n equals

A
5

B
7

C
6

D
4

Solution
Question 10
4 / -1

The number of parallellograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is

A
6

B
18

C
12

D
9