1 is 3, 3 is 5, 5 is 4, 4 is universal. 2 is 3, 3 is 5, 5 is 4, 4 is universal... how is this possible? (What is the rule to this sequence of numbers?)
X has Y letters, and Y has Z letters... up until 4, with 4 letters.
If you have 7 sticks of length 1, 2, 3, 4, 5, 6, and 7cm. Is it possible to make two lines of the same length with them? Can you make four lines of the same length?
Using 1, 2, 3, 4 & 5 in any order and the operators + - % * each exactly once what is the greatest possible value that you can make?