Question: a. How many ways can the letters of the word QUICK be arranged in a row?
b. How many ways can the letters of the word QUICK be arranged in a row if the Q and the U must remain next to each other in the order QU?
c. How many ways can the letters of the word QUICK be arranged in a row if the letters QU must remain together but may be in either the order QU or the order UQ?