How many four letter combinations can be formed using the letters of the word TRIPS?
Choose the correct answer.
A) 12	B) 24	C) 120	D) 240	E) 300
The number of letters in the given word is five.   The number of four letter combinations that can be formed using these five letters is   = 5 * 4 * 3 * 2= 
<gadget id="calculator">5 * 4 * 3 * 2</gadget>
<output>120</output>
120.   Answer: 120
<result>C</result>
How many four letter combinations can be formed using the letters of the word TRIPS?