You are given a list of integers and an integer target, return a list of a pair of numbers in any order such that they add up to target. If there is no such pair of numbers, then return an empty list
Example: [2,4,5,6,4,8,9,10], target=10
Example solution: [2,8]
Example explanation: 2 and 8 are present in the list and sum to 10 which was the target sum

Problem: [4, 18, 3, 8, 29, 11, 39, 30, 24, 1, 40, 17, 21, 2, 32, 49, 15, 43, 16, 10], target=25

Solution: [24, 1]