How many different 4 digit numbers can be formed using the digits 1, 2, 5, 6, 7 and 8?Options36024120720
Question
How many different 4 digit numbers can be formed using the digits 1, 2, 5, 6, 7 and 8?
Options:
- 360
- 241
- 20720
Solution
The problem can be solved by using the concept of permutations.
Step 1: Understand the problem We are asked to find out how many different 4-digit numbers can be formed using the digits 1, 2, 5, 6, 7, and 8.
Step 2: Identify the number of choices for each digit We have 6 choices for the first di
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