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Make a greatest and smallest number by using digits 2, 5, 7 and 8. Then find difference of both the numbers. Then from which of the following number t
Question



Make a greatest and smallest number by using digits 2, 5, 7 and 8. Then find difference of both the numbers. Then from which of the following number this difference is not divisible?

A.

2

B.

3

C.

5

D.

9

Correct option is C


Now, we calculate the difference: 8752 - 2578 = 6174
Now, let's check the divisibility:
· 6174 is divisible by 2 (last digit is even).
· 6174 is divisible by 3 (sum of digits is divisible by 3).
· 6174 is not divisible by 5 (last digit is not 0 or 5).
· 6174 is divisible by 9 (sum of digits is divisible by 9).
Therefore, the difference is not divisible by 5.

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