Permutation Problem

Solution: How many 4 digit numbers can be formed without repeating any digit?

How many 4 digit numbers can be formed without repeating any digit from the given numbers?

Problem Statement: CE Board November 1996

How many 4 digit numbers can be formed without repeating any digit from the following digits: 1, 2, 3, 4 and 6?

Problem Answer:

There are 120 – 4 digit numbers can be formed without repeating any digit

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