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SOF IMO · Higher Order Mathematical Thinking · Quiz

Higher Order Mathematical Thinking — quick quiz

5 real SOF IMO questions on Higher Order Mathematical Thinking. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 4

EASY

A two-digit number is such that the product of its digits is 24. When 18 is subtracted from the number, the digits interchange their places. What is the sum of the digits of the original number?