Question

How many four digit numbers will not
exceed 7432 if they are formed using the
digits 2,3,4,7 without repetition?​

Answer 1

Answer:

2,3,4 , 7

3,2,4,7

4,7,3,2

2,4,3,7

Answer 2

Answer:

Hence, the total 4 digits number that can be formed using 1,2,3,4 such that the number do not exceed 4321 is :6+6+6+5=23.

The total no of four digits number formed =4×3×2×1

⇒24

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