Question

75642 is divisible by 4

Answer 1

no it is not
see the last two digits of the number
it is 42 which is not divisible by 4
so the number is not divisible by 4

Answer 2

75, 642 is not divisible by 4. The divisibility rule for 4 is when the last 2 digits are divisible by 4, then, the number is divisible by 4. The last two digits are 42 and 42 is not divisible by 4.