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Question
Which of the following numbers is divisible by 6?
Options
67821
78134
87432
none of these
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Solution
The correct option is 87432.
A number is divisible by 6 if it is divisible by both 2 and 3.
Since the ones digit of 87432 is 2, it is divisible by 2.
Now, 8 + 7 + 4 + 3 + 2 = 24
24 is divisible by 3.
Hence, 87432 is divisible by 6 because it is divisible by both 2 and 3.
Option 67821 is not correct because 67821 is not divisible by 2.
Option 78134 is not correct because 78134 is not divisible by 3.
7 + 8 + 1 + 3 + 4 = 23
23 is not divisible by 3.
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