Which of the following numbers is divisible by both 2 and 5?

Options
a) 63840
b) 20792
c) 37915
d) 37254

Solution

As per question
Divisibility rule of 2 : last digits number is even No. , it means last digits is 0 , 2 , 4 , 6 , 8
Such now as
63840
20792
37254
Divisibility rule of 5 : last digits is 0 , 5
Such now is 63840

Alternate Method:

divisible by both 2 and 5, means divisible by 2×5=10
Divisibility rule of 10 : Last digit 0
Such Number is only a) 63840

Answer: a) 63840