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MathNet 2024-part-03 — 168 problems (EN–VI) Question 54

Math Olympiad Vault · MathNet 2024-part-03 — 168 problems (EN–VI)

Question 54

Vittorio computes the sum of the numbers from $1$ to $2024$, but by mistake he skips one of them! Knowing that he obtains a multiple of $5$, which of the following can be the skipped number?

(A) $1$
(B) $100$
(C) $222$
(D) $2023$
(E) $2024$