Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
12. How many ways can the letters of the word THEORY be arranged in a row?
12. How many ways can the letters of the word THEORY be arranged in a row?
How many ways can the letters of the word THEORY be arranged in a row if T and H must remain next to each other as either TH or HT?