Question

find the number of 4 digit number that can be formed with 1,2,4,5,6,8 if digits can be repeated​

Answer 1

Answer:

The number of 4 digit is equal to 120

Answer 2

So we have 6 numbers

and we have just 4 positions

so 1st position has 6 choices

2nd has one less as one of them is used above so 5

3 rd similarly 4 and

4th 3

so number of 4 digit numbers is = 6 x 5 x 4 x 3 = 360