## Question

### Solution

Correct option is Total number of ways to arrange 10 balls along a row

= Number of permutations of 10 different objects in a row .

#### SIMILAR QUESTIONS

Q1

Find the number of integers greater than 7000 that can be formed with the digits 3, 5, 7, 8 and 9, no digit being repeated.

Q2

Ten persons, amongst whom are A, B and C, are to speak at a function. If n is the number of ways in which it can be done if A wants to speak before B, and B wants to speak before C find n/800.

Q3

Find the largest such that Q4

Find the largest integer n for which 35! Is divisible by 3n.

Q5

The number of natural numbers which are smaller than 2 × 108 and which can be written by means of the digits and 2 is ………..

Q6

Find the exponent of 2 in 50!?

Q7

Find the number of zeroes in 100!

Q8

A city has 12 gates. In how many ways can a person enter the city through one gate and come out through a different gate?

Q9

Find the number of different words which can be formed using all the letters of the word ‘HISTORY’.

Q10

In how many ways can the letters of the word ‘DELHI’ be arranged so that the vowels occupy only even places?