If a code word is defined to be a sequence of different letters chosen from the 10 letters A, B, C, D, E, F, G, H, I, and J, what is the ratio of the number of 5-letter code words to the number of 6-letter code words?
Pick one:	A) 1 to 5	B) 3 to 2	C) 2 to 1	D) 5 to 1	E) 6 to 1
Number of ways to form 5-letter code: 10!/5! = 10*9*8*7*6   Number of ways to form 6-letter code: 10!/4! = 10*9*8*7*6*5   Ratio: 1 to 5   1 to 5nswer : 1 to 5
<result>A</result>
If a code word is defined to be a sequence of different letters chosen from the 10 letters A, B, C, D, E, F, G, H, I, and J, what is the ratio of the number of 5-letter code words to the number of 6-letter code words?