Q.An eight digit number divisible by 9 is to be formed by using 8 digits out of digits 0,1,2,3,4,5,6,7,8,9 without replacement .The no of ways in which this can be done is:

{ans-(36)*7!

Q.An five digit number divisible by 6 is to be formed by using the digits 0,1,2,3,4,8 without repetition. The no of ways in which this can be done is:

{ans-150}