# NUMBER GAME: Find the secret number between 1 og 100 with as few questions as possible

This is a game for real math nerds!

RULES: The box contains the numbers 1 to 100 and one of them is the secret number. The game play is to find the secret number by asking the questions written below. The purpose of asking the questions is to determine if the number is part of a given sequence of numbers.

If the answer to the question is 'Yes' then all the numbers in the given sequence remain and the other numbers are blanked out. If the answer to the question is 'No' then it is the other way around.

The game ends when only on number remains - the secret number. You have to use as few questions as possible to find the number.
If you are good at this - you might hit the highscore list.

 Click on a question... Is the number a... Prime? Mersenne number? Fermat number? Cubic number? Triangular number? Square number? Centered pentagonal number? Centered hexagonal number? Centered heptagonal number? Pyramidal number? Factorial number? Fibonacci number? Lucas number? Palindrome number? Harshad number? Perfect number? Semi prime? Happy number? Lucky number? Cake number? Lazy caterers number? Hilbert number? Leyland number? Is the number... divisible by 2? divisible by 3? divisible by 4? divisible by 5? divisible by 6? divisible by 7? divisible by 8? divisible by 9? divisible by 10? divisible by 11? divisible by 13? divisible by 17? divisible by 19? Is the digital sum of the number... divisible by 2? divisible by 3? divisible by 5? divisible by 7? divisible by 8? divisible by 11? divisible by 13?

HIGHSCORE list
- or maybe it should be called the lowscore list because it all about using as few questions as possible.

 Number No. of questions Record owner When 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 9 ELISA 9 years ago 17 18 19 20 21 22 23 24 25 26 27 28 6 DRE 10 years ago 29 30 31 32 33 34 35 8 DRE 10 years ago 36 8 DS 10 years ago 37 38 39 40 41 42 6 DS 10 years ago 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 8 DRE 10 years ago 60 8 DRE 10 years ago 61 62 63 64 7 DRE 10 years ago 65 66 67 68 69 70 11 ELISA 9 years ago 71 8 DRE 10 years ago 72 28 ELISA 9 years ago 73 74 75 9 ELISA 9 years ago 76 77 78 79 80 81 18 ELISA 9 years ago 82 83 84 8 DRE 10 years ago 85 86 6 DS 10 years ago 87 88 89 90 91 92 93 94 95 96 7 DS 10 years ago 97 98 99 100 5 ELISA 9 years ago