Q4.1 combinations 1 Point If I have a 22 grid of squares and each square can be filled with a letter from to z, then how many unique ways can I fill in the grid. (your answer should be a number, dont use commas or any separators between digits) Q4.2 combinations 1 Point If I have an nn grid of squares and each square can be filled with k different letters then how many unique ways can I fill in the grid. (choose the one best answer) nk