Question 4: From four of the five numbers 9, 8, 7, 5, 0, let’s combine into a three-digit number that is the smallest number that is divisible by 2 and 5.

Numbers divisible by 2 and 5 end in 0, so their units digit is 0.

The thousands digit of this number is the smallest of the remaining 4 numbers, so the thousands digit is 5

The hundreds digit is 7 and the tens digit is 8.

So the number to find is 5780

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