The question that are used in National Mathematics Olympiad 2009 has been uploaded. You can use these questions to your students practice in schools. This problem is also commonly used in the global house of national math and science Olympiad. Good luck!

Question 1 :

The price of a shirt is reduced from 60.000 rupiahs to 48.000 rupiahs. If normally the profit is 50%, how many percent is the profit or loss after the price reduction?

Question 2 :

Two books, two pencils and one eraser altogether cost Rp12.000, 00. One book, one pencil and one eraser altogether cost Rp7.000, 00. How much do you have to pay for five books, five pencils and one eraser altogether?

Question 3 :

A natural number N has remainder 1 when divided by 4. It also has remainder 2 when divided by 5, and 5 when divided by 6. What is the smallest value of N?