Permutations and Combinations Test

Result

Permutations and Combinations Test - 33

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

A
n > 6

B
n > 7

C
n < 6

D
None of these

Solution
Question 2
4 / -1

A
3

B
4

C
5

D
6

Solution
Question 3
4 / -1

The least value of natural number n satisfying C (n,5) + C(n,6) > C(n + 1,5) is

A
11

B
10

C
12

D
13

Solution
Question 4
4 / -1

A person is permitted to select at least one and at most n coins from a collection of (2n + 1) distinct coins. If the total number of ways in which he can select coins is 255, then n equals

A
4

B
8

C
16

D
32

Solution
Question 5
4 / -1

How many numbers of 6 digits can be formed from the digits of the number 112233

A
30

B
60

C
90

D
120

Solution
Question 6
4 / -1

In how many ways can 5 red and 4 white balls be drawn from a bag containing 10 red and 8 white balls

A

B

C

D
None of these
Question 7
4 / -1

In an election the number of candidates is 1 greater than the persons to be elected. If a voter can vote in 254 ways, then the number of candidates is

A
7

B
10

C
8

D
6

Solution
Question 8
4 / -1

In how many ways can 21 English and 19 Hindi books be placed in a row so that no two Hindi books are together

A
1540

B
1450

C
1504

D
1405

Solution
Question 9
4 / -1

A

B

C

D

Solution
Question 10
4 / -1

In how many ways a team of 11 players can be formed out of 25 players, If 6 out of them are always to be included and 5 are always to be excluded

A
2020

B
2002

C
2008

D
8002