Question

Using divisibility tests, determine $1700$ is divisible by $4$ and $8$.

Answer 1

If the last two digits of a whole number are divisible by $4$ , then the entire number is divisible by $4$
But last two digits of $1700$ is zero so:
When $1700÷4=425$, we get remainder zero, so $1700$ is divisible by $4$
If the last three digits of a whole number are divisible by $8$ , then the entire number is divisible by $8$
When $1700$ is divided by $8$, we get remainder $4$, so $1700$ is not divisible by $8$
Hence,$1700$ is divisible by $4$ but not divisible by $8$.