Which number among 38211, 38121, 32118, and 31128 is divisible by 24?
31128
A number is divisible by 24 if it is divisible by both 3 and 8.
Let's check each number: 32118:
Divisible by 2 (even) but not by 3 (sum of digits is 15, divisible by 3).
Divisible by 8 (last three digits 118 are not divisible by 8).
38121: Not divisible by 2 or 8.
38211: Not divisible by 2 or 8.
31128: Divisible by 2 (even).
Divisible by 8 (last three digits 128 are divisible by 8).
Sum of digits is 15 (divisible by 3).
Therefore, 31128 is divisible by 24 (3 x 8 = 24).
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