SASMO 2027 · Grades 4-5 · SET 003 · Self-study Question 12

The operator □ acts on two numbers as shown: 17 □ 29 = 23; 19 □ 11 = 15; 31 □ 7 = 19. Find 13 □ 23.



Enter a number only.

Pattern convention: use the same simple arithmetic rule suggested by all three examples, as intended by the source.