Question 33
MediumOriginal questionSalma's locker code is the four-digit number 37☐5, and she remembers that it is divisible by 25. What is the sum of all digits that could go in the box?
Show the answer and explanation
CorrectNot quiteAnswer C
Correct answer: C
Explanation
A number is divisible by 25 when its last two digits are 00, 25, 50 or 75.
The last two digits are ☐5, so they must be 25 or 75: ☐ is 2 or 7.
Sum of the possible digits = .
Worth noting
2 and 7 are each possible; the question asks for their sum.
- Concept
- Divisibility rule for 25
- Typical timeTypical
- 55 s
- Your timeYours
- —
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