alleryStart learning →A 3-digit number is made from digits 2, 5 and 8, each used once. Which divisor always works?
A2
B3
C5
D9
Answer & Solution
Correct answer: B. 3
The digit sum is always 15, which is a multiple of 3 but not of 9, and the last digit changes, so only 3 is always a divisor.
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