G + one = Gone
An eight year old kid challenged his classmates that he can make the number one disappear by adding something to it.
How can he do that?
How many ways can you find to make the number 10, by adding or subtracting prime numbers? The same numbers but in a different order count as the same answer. (Prime numbers are only divisible by themselves and 1 so they are 2, 3, 5, 7, 11, 13, ...)
