(Context: The JMC's scoring system is as follows: There are 25 questions on the paper, which lasts 1 hour. 5 marks are awarded for each correct answer between Q1-15. 6 marks are awarded for each correct answer between Q16-25)
Gill sat the JMC last year, when the scoring system used was the same as this year’s system. She answered all the questions she did correctly. The first question took her 1 second, question 2 took her 2 seconds, question 3 took her 4 seconds and so on, the time doubling for each question. What was Gill’s score?
Sign in or create an account to reveal answers, view the solution, and save your progress. Create a free account to unlock practice and keep track of your work.
Junior Mathematical Challenge 2002 (2002)
One puzzle per day. Cryptarithm, Magic Square, Summit. No sign-up required to play.
Play daily puzzle →Interactive problems and curated lessons—water pouring, magic squares, knight's tour, and more.
Browse library →See how you rank. Top solvers by problems solved correctly. Sign in to climb the ranks.
View leaderboard →Junior Mathematical Challenge 2002 (2002)