Question

list the number(s) for the given set-builder notation: {x/x is a whole number divisible by 5 and less than 27}

Answer 1

Here's the divisibility rule:
A whole number is divisible by 5 if the digit in its units position is 0 or 5.
Examples:
The number 95 is divisible by 5 since the last digit is 5.
The number 343370 is divisible by 5 since the last digit is 0.
The number 129700195 is divisible by 5 since the last digit is 5.

Hint: the smallest whole number is 0.