2. A book costs €18 after 10% reduction. Initial price?

3. Suite : 2, 6, 12, 20, 30, ... ?

4. Suite : 1, 3, 6, 10, 15, 21, ... ?

5. If the word "DOG" is coded "DJIFO", how to code "CAT"?

6. How many right angles are there in total on the faces of a cube?

7. What is the average of 10, 20 and 30?

8. Which letter completes the series: A, C, E, G, ...?

9. Suite : 1, 2, 4, 7, 11, 16, 22, ... ?

10. Logical sequence: 1, 4, 10, 20, 35, ...?

11. If 5 + 7 = 12, then 7 + 9 = ?

12. Marc is 6 years old, his sister is half his age. When Marc is 50, how old will his sister be?

13. The combination C(5,2) = ?

14. How much is 20 - 8?

15. A 4×4×4 cube contains how many small 1×1×1 cubes?

16. What number is missing: 5, 7, 11, 19, 35, ...?

17. How many faces does a triangular prism have?

18. If 5 machines produce 5 objects in 5 minutes. How long does 100 machines take for 100 objects?

19. Logical sequence: 5, 10, 15, 20, ...?

20. What is the next number in this sequence: 2, 6, 18, 54, ...?

21. A number multiplied by 3 then increased by 5 gives 20. The number is ?

22. A 3×3 square has the area?

23. A square has a perimeter of 20cm. One side measure?

24. If you rotate a wheel 360 degrees, its position is?

25. A clock shows 3:15. The angle between the hands is ?

26. Find the intruder among these countries: France, Germany, Spain, Japan.

27. Memorize the numbers: 7, 2, 9, 4. What number was in 3rd position?

28. If 3x = 12, then x = ?

29. If 4 painters paint 4 houses in 4 days, 8 painters paint?

30. What is the probability of rolling two dice?

31. What shape is the base of a classic pyramid?

32. How many sides does a square have?

33. Which is bigger: 50 or 45?

34. If 5 machines make 5 parts in 5 min, 100 machines make 100 parts in ?

35. Which finger is the longest?

36. In a regular 5-pointed star, how many distinct triangles can be drawn?

37. Memorize: Blue, Green, Yellow, Black, White. What was the 4th color?

38. Suite : 2, 4, 8, 16, ... ?

39. Complete: Monday, Tuesday, Wednesday, ...?

40. If 2x + 5 = 15, then x = ?

41. How much is 5 + 3?

42. Memorize these 3 words: CAT, RED, PARIS. What was the second word?

43. If f(x) = 2x² - 3, then f(3) = ?

44. What is the sequence: 1, 1, 2, 3, 5, 8, ...?

45. What number is missing: 4, 9, 19, 39, ...?