Question 45
How many three-digit numbers, with each digit unequal to zero, are there such that the three digits add up to $7$?
A) $4$ B) $7$ C) $10$ D) $15$ E) $21$
A) $4$ B) $7$ C) $10$ D) $15$ E) $21$
MathNet 2023-part-04 — 191 problems (EN–VI) Question 45
Math Olympiad Vault · MathNet 2023-part-04 — 191 problems (EN–VI)