Maths Olympiad Prep

Track / Stage 4 / 235 of 340 #495 of 1964

Problem 495

AMC 12 late, AIME early
Number theory Difficulty 4.9 Find the answer

Divide the natural numbers 1,2,3,4,...,20191,2,3,4, \ldots . . ., 2019 into 20 groups so that the average of each group is equal. What is the average of each group? \qquad

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

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Official solution

Reference answer: 1010

Exam point: Calculation -- average

Source: NuminaMath-1.5, licensed Apache-2.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.