1.

How many 6-digit numbers can be formed from the digits 0,3,5,7 and 9 which are divisible by 10 and no digits is repeated?

Answer» Since numbers are divisible by 10, so there will always be 0 at unit place.<br> No. of ways of placing remaining 5 digits at 5 places<br> `= .^(5)P_(5) = 5! = 120`<br> Total numbers `= 120`


Discussion

No Comment Found