Maths Olympiad Prep

Library / /107 of 348

Algebra Difficulty 4.8 AIME Find the answer

Find the next two smallest juicy numbers after 6, and show a decomposition of 1 into unit fractions for each of these numbers.

A number or a short expression. Spacing and $ signs are ignored.

Solution

12 and 15: 1=12+14+16+1121=\frac{1}{2}+\frac{1}{4}+\frac{1}{6}+\frac{1}{12}, 1=12+13+110+1151=\frac{1}{2}+\frac{1}{3}+\frac{1}{10}+\frac{1}{15}.

Want a route through all this instead of an archive? The track puts 2,000 problems in a working order, from AMC 10 level to the IMO shortlist.

Source: Omni-MATH, licensed Apache-2.0. Statement and solution reproduced as published; topic and difficulty added by this site.