alleryStart learning →Which digit can NOT replace * in the number 82*4 if the number must be divisible by 3?
A1
B4
C5
D7
Answer & Solution
Correct answer: C. 5
8 + 2 + 4 = 14, so * must leave a digit sum that is a multiple of 3. The digits 1, 4 and 7 give 15, 18 and 21, but 5 gives 19, which is not.
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