Question

Explain the divisibility rule for division by 2, 4 and 8. [4 MARKS]

Answer 1

Concept: 4 Marks

(i) A number is divisible by 2, if its last (unit) digit is divisible by 2 (e.g. 78, 50, 146, etc.)

(ii) A number is divisible by 4, if the number formed by its last two digits is divisible by 4.

e.g. 172 is divisible by 4 as the number 72 formed by its last two digits is divisible 4. Similarly, 392, 500, 29320, etc. are also divisible by 4.

(iii) A number is divisible by 8, if the number formed by its last three digits is divisible by 8. (e.g. 33176, 436000, etc)