Amir has three children. One is the same age as the first number in his age, another is the same age as the second number in his age, and the third is the same age as the sum of the two numbers in his age. None of the children are the same age and the total of everyone’s ages is 45. How old is Amir?
What is the longest unscientific English word that uses every letter in the word exactly twice? For example, noon has two Ns and two Os, but it’s not nearly long enough.
Happenchance. There are two Hs, two As, and so on for all the letters in the word. The longest scientific word with the same property is probably esophagographers.
The next number in the series counts the previous numbers. Thus the first number is 1, which is one 1, or 11. To describe 11, you have two 1’s, or 21. Now you have one 2 and one 1, so the next number is 1211. The solution is to continue describing the previous number using only numbers.