A soccer team has 4 grade ten players, 7 grade eleven players and 8 grade twelve players. The coach wants to select 3 players to practice together. How many ways can the 3 players be chosen if they must all be in the same grade? 95 570 0969 0 18 How many different arrangements of all of the letters in the word ROTATOR are possible if it must begin with a vowel? 270 360 2880 O 2160 6. The coefficient of a in the expansion of (2x 1)" is 0-12 0-192 0 12 192 In the diagram below, how many different paths from A to B are possible if you can only move forward and down? A B