Question

IN how many ways the digits ,1,2,3,4,can be arranged so that they are divisible by 4
.......... spamming will be reported......​

Answer 1

Answer:

If the digits can be repeated then,

Answer would be------>4×3×2×1=24

Last digit can be filled in one way because 4 only can be used so that it can be divisible by 4

1st digit can be filled in 4 ways

2nd digit can be filled in 3 ways

3rd digit can be filled in 2 ways

If the digits cannot be repeated then,

Last digit can be filled in one way

1st digit can be filled in 3 ways

2nd digit can be filled in 2 ways

3rd digit can be filled in one way

Answer would be------>1×2×3×1=6