Question

An integer is divisible by $16$ if and only if its last ___ digit are divisible by $16.$

• A. $3$
• B. $4$
• C. $5$
• D. $6$

Answer 1

The correct option is B $4$

$\Rightarrow$ Divisibility rule by 16 - The number formed by last four digits in given number must be divisible by 16.

$\Rightarrow$ For example - The last four digit of $984864$ is $4864$ is divisible by 16 then the number $984864$ is also divisible by 16.

$\therefore$ An integer is divisible by 16 if and only if its last $4$ digit are divisible by 16.