T _ _ _ _ _ _ _ _ _ Y → 10! / (2!2!) = 907200.
Answer: 907200
How many arrangements of the letters of the word TRIGONOMETRY can be made, if each arrangement begins with T and ends with Y?
T _ _ _ _ _ _ _ _ _ Y → 10! / (2!2!) = 907200.
Answer: 907200
Discuss theoretical concepts, mathematical formulas, and architectural foundations.