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Question : If the sum of digits of any number between 100 and 1000 is subtracted by the same number, the resulting number is always divisible by:

Option 1: 2

Option 2: 5

Option 3: 6

Option 4: 9


Team Careers360 4th Jan, 2024
Answer (1)
Team Careers360 10th Jan, 2024

Correct Answer: 9


Solution : Let's consider a number with three digits, a, b, and c.
The value of this number can be expressed as follows: 100a + 10b + c
Subtracting the sum of the digits from the number,
(100a + 10b + c) – (a + b + c) = 99a + 9b = 9 (11a + b)
Hence, the resulting number is always divisible by 9.

Option 4 is correct.

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