Which of the following numbers are divisible by 7

Which of the following numbers are divisible by 7:
(i) 46f8894875
(ii) 3794856
(iii) 39823

Solution:

(i) If 34x is a multiple of 3, where x is a digit, what is the value of x?
(ii) If 74×5284 is a multiple of 3, where x is a digit, find the value(s) of x.

Solution:

If 42z3 is a multiple of 9, where z is a digit, what is the value of z?

Solution:

More Solutions:

• Which of the following numbers are divisible by 5 or by 10
• Which of the following numbers are divisible by 3 or 9
• In each of the following replace * by a digit: 49 * 2207
• In each of the following replace * by a digit: 64*2456