How many number of two digits are divisible by 7 ?

How many numbers of two digits are divisible by 6 ?

How many two-digit numbers are divisible by 3?

Find the sum of all odd numbers of four digits which are divisible by 9.

How many three-digits numbers are divisible by 7 ?

How many numbers of four digits can be formed by using the digits 1, 3, 5, 7, 9, a digit being repeated any number of times in any number ?

How many of them are divisible by 10 if 6 digit numbers formed by 0,1,3,5,7,9 when no digit repeated?

Given below are two pairs of statements. Combine these two statements using if and only if : p : If the sum of digits of a number is divisible by 3, then the number is divisible by 3. q : If a number is divisible by 3, then the sum of its digits is divisible by 3.

Statement-1: A 5-digit number divisible by 3 is to be formed using the digits 0,1,2,3,4,5 without repetition, then the total number of ways this can be done is 216. Statement-2: A number is divisible by 3, if sum of its digits is divisible by 3.