Permutations and Combinations Test

Result

Permutations and Combinations Test - 46

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Weekly Quiz Competition

Question 1
4 / -1

Nine hundred distinct n digit numbers are to be formed using only the 3 digits 2,5,7. The smallest value of n for which this is possible is _______

A
6

B
7

C
8

D
9

Solution
Question 2
4 / -1

Let A be a set with n elements. The number of onto functions from A to A is _______

A

B

C

D

Solution
Question 3
4 / -1

The number of number that can be formed using all the digits from 1,2,3,4,3,2,1 so that odd digits occupy odd places is _______

A
12

B
18

C
24

D
36

Solution
Question 4
4 / -1

10 person are to be arranged around a round table. 3 persons wish to sit as a group number oways the arrangement can be made is _______

A

B

C

D

Solution
Question 5
4 / -1

How many number greater than 10 lac be formed from 2,3,0,3,4,2,3 _______

A
420

B
360

C
400

D
300

Solution
Question 6
4 / -1

The average of the four digits numbers that can be formed by using each of the digits 3,5,7,and 9 exactly once in each number is _______

A
4444

B
5555

C
6666

D
7777

Solution
Question 7
4 / -1

In an examination a question paper consists of 10 questions which is divided into two parts. i.e part i and part ii containing 5 and 7 questions respectively. A student is required to attempt 8 question in all selecting at least 3 from each part. In how many ways can a student select the questions _______

A

B

C

D

Solution
Question 8
4 / -1

A library has a copies of one book, b copies of two books, C copies of each of three books and single copy of d books. The total no. of ways in which these books can be distributed is _______

A

B

C

D

Solution
Question 9
4 / -1

Three boys and three girls are to be seated around a round table in a circle. Among them the boy X does not want any girl neighbour and the girl Y does not want any boy neighbour then the no. of arrangement is _______

A
2

B
4

C

D

Solution
Question 10
4 / -1

4 boys picked up 30 mangoes. In how many ways can they divide them, if all mangoes be identical _______

A

B

C
5456

D
6554

Solution