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How Many Four Digit Numbers Can Be Formed Using The Digits 1, 2, 3, 4, 5 (but With Repetition) That Are Divisible By 4? Can You Help Alok Find The Answer ?

Answer»

1= 5^4-1=125, N= no of digits

1 2

2 4

3 2

4 4

5 2

The first two digits in the PLACE can be filled in 5 x 5 ways.

So there are totally 25 x 5 = 125 ways

1= 5^4-1=125, n= no of digits

1 2

2 4

3 2

4 4

5 2

The first two digits in the place can be filled in 5 x 5 ways.

So there are totally 25 x 5 = 125 ways



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