Determine whether is divisible by or by .
Step 1 : Checking the divisibility by
Divisibility by : A number is divisible by if its last ( unit’s )digit is
do not have at its unit's place , it has at its unit's place . So , it is not divisible by
Step 2 : Checking the divisibility by
Divisibility by : A number is divisible by if its last ( unit’s ) digit has or
neither have nor at its unit's place , it has at its unit's place . So, it is not divisible by
Hence , is neither divisible by nor by .