Question

Rita wrote a three digit number on the white board and then subtracted the sum of its digits from the number itself. Two of the digits of the resulting number are 3 and 4. What is the remaining third digit of resulting number?

• A. 3
• B. 4
• C. 2
• D. 1

Answer 1

For a three digit number, the sum of its digits a + b + c cannot be more than 9.

Since the two digits are 4 and 3, the third digit is 2.