Tag Archives: Math Olympiad

US First Place in International Math Olympiad! China Drops to Second (Related to Banning of Math Olympiad?)

Congratulations to USA for their First Position in the IMO, a position traditionally held by China! China has been holding the 1st position in the IMO for 21 years. News: Indian-Origin Students Help US Win Math Olympiad After 21 Years … Continue reading

Posted in math olympiad | Tagged | 3 Comments

Permutation Math Olympiad Question (Challenging)

March’s Problem of the Month was a tough one on permutations. Only six people solved it! (Site: http://www.fen.bilkent.edu.tr/~cvmath/Problem/problem.htm) The question goes as follows: In each step one can choose two indices and transform the 100 tuple into the 100 tuple … Continue reading

Posted in math problem of the month | Tagged , , , | 3 Comments

NUS High Selection Test (DSA)

Official Website: http://www.nushigh.edu.sg/admission-n-outreach/admissions/eligibility-n-admissions-process The official website, unfortunately, doesn’t tell much about how the NUS High Selection Test / DSA is like, in particular the format of the exam. However, from online sources from students who took the test, we can … Continue reading

Posted in nus high school | Tagged , , , , | 5 Comments

Solution to HP A4 Printer Paper Mysterious Question

A while ago, I posted the HP A4 Paper Mysterious Question which goes like this: Problem of the Week Suppose is a function from positive integers to positive integers satisfying , , and , for all positive integers . Find … Continue reading

Posted in math olympiad solution, Uncategorized | Tagged , , | 8 Comments

Is there a set of 2015 consecutive positive integers containing exactly 15 prime numbers?

Check out this intriguing Math Olympiad Number Theory question: Is there a set of 2015 consecutive positive integers containing exactly 15 prime numbers? For instance, the number of primes in the set {1,2,3,…,2014,2015} is 305. This can be computed by … Continue reading

Posted in math olympiad | Tagged | 5 Comments

Math Olympiad Question: Sum of powers of two

Is there a number that is a sum of two powers of 2, and ends with 3 zeros? The answer is yes! For example, =14474011154664524427946373126085988481658748083205070504932198000989141205000 How about n zeroes? Check out last month’s problem of the month at: http://www.fen.bilkent.edu.tr/~cvmath/Problem/problem.htm Question: http://www.fen.bilkent.edu.tr/~cvmath/Problem/1409q.pdf Solution: http://www.fen.bilkent.edu.tr/~cvmath/Problem/1410a.pdf   Featured … Continue reading

Posted in math olympiad tuition, maths tuition, number theory | Tagged , , , | Leave a comment

HCI Confession Page Math Joke

Source: https://www.facebook.com/HwaChongConfessions “Today I asked the girl I like on FB to help me do math prob 9x-7i>3(3x-7u) 9x-7i>9x-21u -7i>-3(7u) -i>-3u = i<3u but she go put the ans as 3u>i ruining my whole plan T.T” -HCJC Student (M) Math … Continue reading

Posted in hci, hwa chong | Tagged , , , , , , , , , | Leave a comment

Are Math competitions good?

Are Math competitions good? Source: http://www.dnaindia.com/academy/report-do-math-competitions-inspire-students-to-gain-proficiency-in-the-subject-1966588 Check out the above website to see the pros and cons of Math competitions, and whether they inspire students to be better at Math. The most important is to enjoy doing Math, as Math … Continue reading

Posted in maths competition | Tagged , , , , | Leave a comment