Register
How many four digit numbers can be formed from the digits 1, 3, 5, 7 and 9 if no digit may be repeated in a number
90.4k views
3 votes
How many four digit numbers can be formed from the digits 1, 3, 5, 7 and 9 if no digit may be repeated in a number

User Brian Van Rooijen
by
6.8k points

1 Answer

3 votes
Numbers: 1,2,4,5,7,8
There are 4 digits __ __ __ __
1st digit can be filled by any of the 6 numbers
Similarly 2nd, 3rd and 4th
Hence each digit will have 6 possibilities
Therefore no.of 4 digit numbers that can be formed are 6 x 6 x 6 x 6 = 1296
User Sajee
by
7.4k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.3m questions

10.9m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
Link Copied!