Maths Olympiad Prep

Track / Stage 2 / 54 of 320 #374 of 2604

Problem 374

Number theory Difficulty 2.0 Find the answer UKMT Senior Mathematical Challenge · United Kingdom · 2023

The expression 7n+122n+3\dfrac{7n+12}{2n+3} takes integer values for certain integer values of nn. What is the sum of all such integer values of the expression?

(A) 44 (B) 88 (C) 1010 (D) 1212 (E) 1414

The source for this one didn't record the answer, so there is nothing to check what you type against. Work it on paper and mark yourself against the solution below.

Next problem →

We don't reproduce this publisher's solutions. Their own solution is here — work the problem first.

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