Maths Olympiad Prep

Library / /77 of 121

, 2021

Number theory Difficulty 3.0 AMC 10/12 Find the answer United Kingdom

The number 2021 has a remainder of 5 when divided by 6, by 7, by 8, or by 9. How many positive integers are there, smaller than 2021, that have this property?

(A) 44 (B) 33 (C) 22 (D) 11 (E) none

Want a route through all this instead of an archive? The track puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.

Source: UK Mathematics Trust, licensed © UK Mathematics Trust; past papers published free at ukmt.org.uk. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.