- Tardigrade
- Question
- Mathematics
- S = 0,2,4,6,8 . A natural number is said to be divisible by 2 if the digit at the unit place is an even number. The number is divisible by 5 , if the number at the unit place is 0 or 5 . If four numbers are selected from S and a four digit number ABCD is formed. The number of such numbers which are even (all digits are different) is
Q.
. A natural number is said to be divisible by 2 if the digit at the unit place is an even number. The number is divisible by 5 , if the number at the unit place is 0 or 5 . If four numbers are selected from and a four digit number is formed.
The number of such numbers which are even (all digits are different) is
Solution: