Given an integer array "arr", return true if it is possible to pick numbers from the array that add up to exactly 10. Example: The set {3,5,7} can add 3+7 to get exactly 10, while the set {2,5,7} does not have any way to sum numbers to get exactly 10. Note: You cannot use the same number more than once and you do not have to use every number in the array.