This is a demo of Math Olympiad 2. Your next practice questions in a specific program will be specially tailored for you as the system learns from your previous practices!
[1] Please find the missing number in 145, 143, 141, 139, 137, ?, 133, ...
Please give your answer:
[2] Each face of a cube has a unique color. Below shows some of the faces of the cube. What is the possible color of the face that is opposite to the face with (yellow) color?
Please give your answer:
black blue green red white
[3] Observe the following equivalence relationships. How many baseballs are equivalent to one soccer ball?
Please give your answer:
[4] There were 25 books in a bookshelf originally. After half of the storybooks were borrowed by students, 16 books were left in the shelf. How many storybooks were there originally?
Please give your answer:
[5] How many cuts are needed to cut a long log into 20 shorter pieces?
Please give your answer:
[6] Last year, Edward was 4 lb heavier than Sofia. Edward gained 11 lb and Sofia gained 8 lb since then. How much is Edward heavier than Sofia now (in lb)?
Please give your answer:
[7] Below are the numbers from 0 to 9 made of matchsticks.
How many matchsticks will be required to make the two-digit number 35?
Please give your answer:
[8] Among three stundents of Andy, Curtis and Edward, Andy is not the shortest. Edward is not the shortest, nor is the tallest. Who is the shortest among them?
Please give your answer:
Andy Curtis Edward
[9] One stroke drawing means that you have to finish a figure with a single stroke from the beginning to the end, without moving the pen off from the paper. You are not allowed to draw the same line twice, however a line can intersect or touch itself. Can the following figure be drawn with one stroke?
Please give your answer:
Yes No
[10] Figure out the rule used to arrange the numbers, then decide what number should come next in the series.
391521
Please select your answer:
A) 27B) 25C) 24D) 18E) 26



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