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Question


By which of the following numbers is 392 divisible?


Options:
A .   9
B .   3
C .   2
D .   4
Answer: Option C
:
C and D

A number is divisible by 3 or 9 if the sum of its digits is divisible by 3 or 9 respectively.
Here, sum of digits = 3 + 9 + 2 = 14 which is not divisible by either 3 or 9. Hence, the number is not divisible by 3 and 9.
Being an even number, the given number is divisible by 2.
A number is divisible by 4 if the number formed by the last two digits are divisible by 4.
In 392, 92 which is divisible by 4. Hence, the number is also divisible by 4.



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