How many different 6-letter sequences are there that consist of 1A, 20B's and 15C's ?
Choose the correct option:
A) 6 B) 60 C) 120 D) 360 E) 720
How many different 6-letter sequences are there that consist of 1 A, 20B's, and 15 C's?   (A) 6   (B) 60   (C) 120   (360) 360   (E) 720 (ANS 360)
<result>D</result>
How many different 6-letter sequences are there that consist of 1A, 20B's and 15C's ?