Divisiblilty Rules -- Quant Study Notes for Competitive Exams

What are the divisibility rules?

The divisibility rule is that which is used to determine whether or not the number is divisible by another number. For example, to check if a number is even, implying if it is divisible by 2, check the last digits of the number to see if they are - 2, 4, 6, 8, or 0.

Is 555555 divisible by 7?

no

What is the divisibility of 4?

Divisibility of 4: A number is divisible by 4 if the last two digits of the number are divisible by 4.

What is 777 divisible by?

777 is divisible by 1, 3, 7, 21, 37, 111, 259, 777.

What is divisibility rule of 11, explain with example?

Divisibility Rule of 11: If the difference between the sum of the digits at odd places (from right) and the sum of the digits at even place (from right) is 0 or a multiple of 11, then it is divisible by 11.

E.g. 356213 has the sum of the digits at odd places 3 + 2 + 5 = 10 and the sum of the digits at even places, 1 + 6 + 3 = 10. So 10 – 10 = 0. Hence it is divisible by 11.