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AMO · 2027 · Grades 2-3 · Self-study SET 21 Question 13

AMO

Question 13

How many 3-digit numbers have the sum of the digits less than 5?

Original printed choices: A. 4; B. 8; C. 12; D. 15; E. 19.

**Editorial note:** The printed choices contain a source error. Enter the corrected count rather than an option letter. Three-digit numbers range from 100 to 999. Enter only the number, without units.