six digit number which is consisting of only one digits either `1,2,3,4,5,6,7,8 or 9,` e.g. `111111, 222222..` etc. This number is always divisible by:

There is one number which is formed by writing one digit 6 times (e.g. 111111, 444444 etc.). Such number is always divisible by

A six digit number is formed by repeating a three digit number, for example, 256256 or 678678 etc. Any number of this form is always exactly divisible by :

The number of four digit odd numbers that can be formed with 1,2,3,4,5,6,7,8,9 is

A 9 digit number using the digits 1,2,3,4,5,6,7,8&9 is written randomly without repetition.The probability that the number will be divisible by 9 is:

Total number of 10 – digit numbers in which only and all the digits 1, 2, 3, 4, 5, 6, 7, 8, 9 appear, is:

Total number of 10 – digit numbers in which only and all the digits 1, 2, 3, 4, 5, 6, 7, 8, 9 appear, is: