_ 11. [-11 Points] DETAILS ROLFFMB 6.5.021. MY NOTES ASK YOUR TEACHER A Campre Girls troop has 15 members. In how many different ways can the leader appoint 3 members to clean up camp? C] different ways 12. [-12 Points] DETAILS ROLFFMB 6.4.058. MY NOTES ASK YOUR TEACHER The keypad to the lock to the computer lab has 8 buttons. An access code is a sequence of 3 buttons or 4 buttons. Find the number of access codes: (a) If a button may be repeated. sequences H (b) If a button may not be repeated. sequences U 13. [-11 Points] DETAILS ROLFFMB 6.4.050. MY NOTES ASK YOUR TEACHER A student did not study for a test, so he has no idea of the correct answers to 10 true/false questions. He decides to answer 5 true and 5 false. How many sequences of 5 true and 5 false answers are possible? 14. [-14 Points] DETAILS ROLFFMB 6.2.001. MY NOTES ASK YOUR TEACHER A = {5-, b, c, d, e, f, g, x, y, z}, B = {(3, r, a, z, y}. Find the following. (See Example 1.) (a) "(-4) B (b) r103) U (c) n(A n B) B (d) n(A u S) U 15- [-11 Points] DETAILS ROLFFMB 6.1.016. MY NOTES ASK YOUR TEACHER Is A a subset of B? A = {1, 2, 5, 6, 14, 19}r B = {1, 5, 19} 0 Yes, A is a subset of B. O No, A is not a subset of B