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... 7. The diagram shows a path consisting of four semi-circular arcs. Each arc is of length 100 m and uses a different side of a square as its diameter. Initially, Jane is at A and Yves at B. They start walking ...

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... z Do not open the contest booklet until you are told to do so. z Be sure that your name and code are written on the space provided above. z **Round** 2 of **IMAS** is composed of three parts; the total score is 100 ...

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... 10. A table has 3 rows and 3 columns. In each square, we put in the product of the row number and the column number of that square. For instance, the number in the third row and the **second** column is 3×2=6, as ...

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... Answer: 45 number sentences 10. An ant starts from the top left corner square of a 3 5 chessboard. It moves from a square to the adjacent square in the same row or column. After visiting every square exactly once, it ...

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... 17. In a standard clock, the angle between two of its hands is the angle they form which is 180° or less. In which of the following five times will the angle between the minute and **second** hands be greater than or ...

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... 23. Three robots are programmed to count numbers. Robot A starts with the number 20 and it counts by increasing the number by 11 every **second**. Robot B starts with the number 2018 and it counts by decreasing the ...

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... 14. There are two routes starting in a bus stop. A bus departs for the first route every 8 minutes and departs the **second** route every 10 minutes. At 6:00 in the morning, two buses depart for the two routes at the ...

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... （A）403 （B）504 （C）672 （D）1008 （E）**2014** 10. A cubic box of side length 15 cm has two holes. One of them is 5 cm above and 5 cm to the left of the bottom right corner of the front face. The other is 5 cm below and 5 ...

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... 【 Solution 】 If all pieces were placed into black squares, there are two ways to put the pieces on the first and the third row, two ways to put the pieces on the **second** and the fourth row, totally there are 4 ...

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... If there are less than 4 rows with pieces more than 1, covering 4 rows with the most pieces will leave all remaining row each contains no more than one piece. The remaining pieces can be covered by 4 columns, ...

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... Answer: 3600 dollars. 7. The diagram shows a path consisting of four semi-circular arcs. Each arc is of length 100 m and uses a different side of a square as its diameter. Initially, Jane is at A and Yves at B. They ...

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