Question
Which of the following numbers completely divides 225?
Which of the following numbers completely divides 225?
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Solution
The correct option is C 3
225 is an odd number. Hence it is not divisible by 2.
We know that if a number is not divisible by 2, it cannot be divisible by 6.
(2 + 2 + 5) = 9
9 is divisible by 3. Hence 225 is divisible by 3.
The number formed by last 2 digits is 25 and 25 is not divisible by 4. Hence 225 is not divisible by 4 either.
225 is an odd number. Hence it is not divisible by 2.
We know that if a number is not divisible by 2, it cannot be divisible by 6.
(2 + 2 + 5) = 9
9 is divisible by 3. Hence 225 is divisible by 3.
The number formed by last 2 digits is 25 and 25 is not divisible by 4. Hence 225 is not divisible by 4 either.
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