Question

State the divisibility rule for 4. Using divisibility test, determine which of the following numbers are divisible by 4?
(a) 4096 (b) 21084
[2 MARKS]

Answer 1

Each option: 1 Mark

A number is divisible by 4 if the last two digits of the whole number are divisible 4.
(a) Since number formed by tens and units digit is 96, which is divisible by 4. Hence, 4096 is divisible by 4.
(b) Since number formed by tens and units digit is 84, which is divisible by 4. Hence, 21084 is divisible by 4.