Register
The digits 5, 7, 1, and 9 are to be used in a roll number in a school. How many different roll numbers are possible if repetitions are not permitted?
201k views
16 votes
The digits 5, 7, 1, and 9 are to be used in a roll number in a school. How

many different roll numbers are possible if repetitions are not permitted?

User OkieOth
by
3.2k points

1 Answer

12 votes

Answer:

1, 7, 5, 9
7, 1, 9, 5

9, 5, 1, 7

But there are about 10 possible combinations.

Explanation:

User Nilesh Rathore
by
3.9k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

3.4m questions

4.3m answers

Other Questions

A study was completed in Florida. In southern Florida, the study involved 3,000 patients; 54% of them experienced flulike symptoms during the same month. The study had a margin of error of 1.8%. What does
Can someone help me plz I have to Turn 27/9 in simplest
The sanchez family goes out for dinner, and the price of the meals is $60. The sales tax on the Meals is 7 percent, and they also want to leave a 15 percent tip. What is the total cost of the meal? Analyze
Simplify: 10 ÷ [(5 + 2) − 5]
A survey of 539 adults aged 18-24 year olds was conducted in which they were asked what they did last Friday night. It found: 189 watched TV 163 hung out with friends 29 watched TV and ate pizza, but did
Link Copied!