10-second Questions (NOW WITH 150+ QUESTIONS!)

Want a quick, easy problem that you can work on in 10 seconds? Try these.

(1) Is 1000000000 a perfect square?

(2) Is 8388607 a prime number?

(3) How many times would you have to write the number 6 when you write from 1 to 100?

(4) A bus contains 23 men and 14 women. In the first stop after the start, 11 men board and 2 women do. In the next stop, 6 men board and 3 women do. In the next, 2 men alight and 2 women do, but also 2 men board the bus and 2 women do. The question is, how many places did the bust stop from the start to the destination? (You are granted 20 seconds for this, as a special case!)

(5) In the realm of whole numbers, apart from zero and one, which the smallest number which is both a perfect square and a perfect cube?

(6) What is the angle between the hands of a clock when the time is 8.00?

(7) What is the side total of a 3X3 magic square with numbers from 1 to 9?

( 8 ) How many zeros does a trillion (US) contain?

(9) What are the common factors of 111, 222, 333, 444, 555, 666, 777, 888, and 999? (Four of them)

(10) How many furlongs is a mile?

11. What is so special about the number 2.7182818284.... to mathematicians?

12. How many nano seconds is a second?

13. Which number has got the highest probability of being displayed when a pair of dice is cast?

14. How many seconds is an hour?

15. How many digits is 22/7 a correct aprroximation of pi?

16. How many prime numbers are there from 1 to 100?

17. How many numbers, including 7, are divisible by 7 from 1 to 100?

18. If 1000 kilobytes is a megabyte,
1000 megabytes a gigabyte, what is 1000 gigabytes?

19. What would be the last digit of 6^100?

20. Is 1001 a prime number?

21. Is 133 a prime number?

22. How many squares are there from 1 to 1000, inculding 1?

23. And how many cubes?

24. Whats special about the number 0.4771................?

25. How many cubes, including 1, are there from 1 to 1000?

26. What is 6 x 6 x 6?

27. Is 343 a prime number?

28. What is 6!?

29. Aprroximately how many kilometers is a light year?

30. What is sin45+cos45 (degrees)?

31. How many kilometers is a mile approximately?

32. How many pounds is a kilogram approximately?

33. How many zeros does a quintillion (US) contain?

34. What is special about the number 26?

35. What is special about the number 1729? (Ramanujan Number)

36. How many kilometers is earth away from the sun (approximately)?

37. How many bytes make a kilobyte?

38. What is the memory of a 3 1/2 floppy?

39. If 220 yards make a furlong and 8 furlongs make a mile, how many yards is a mile?

40. Approximately how many stars can be seen in the sky on a clear night sky?

41. Approximately how many strands of hair are there on a normal man's head?

42. If a polyhedron contains 12 vertices and 8 sides, how many edges would it contain?

43. What is the significance of the number 0.4343 approximately in Mathematics?

44. And what is the significance of the number 2.303 approximately?

45. How many Watts is a Horsepower?

46. What is the significance of the number 6.023 x 10^23?

47. What is the remainder when 1000 is divided by 7?

48. Roughly how many seconds is a day?

49. What's the difference between a billion in US and that in UK?

50. If the third angle of an isosceles triangle is 82° , what is the measure of the equal angles?

51. Approximately how many degrees is a radian?

52. Is 768625 divisible by 11?

53. What is the slope of the line joining the points (11,7) and (21, 2)?

54. What is the volume of a room of length 12 feet, breadth 12 feet and height 12 feet?

55. How many square meters is a hectare?

56. What is sin²360° + cos²360° ?

57. What are the prime factors of 1001?

58. Is 4096 a perfect square?

59. How much percentage is 4 greater than 3?

60. What is the value of 2^10?

61. If 12 numbers is a dozen, what is 12 dozens?

62. What is the significance of 9.8 m/s² ?