Question

I need help with this question but no one is helping me! Can someone please help me​

Answer 1

a) 0.0187

b) 0.0943

c) 0.2959

Explanation:

a) 9/31 * 8/30 * 7/29 = 0.0187

b) 10/31 * 9/30 * 8/29 + 12/31 * 11/30 * 10/29 + 9/31 * 8/30 * 7/29 = 0.0943

c) 21/31 * 20/30 * 19/29 = 0.2959