1 00:00:00,000 --> 00:00:02,000 The answer is 0.6. 2 00:00:02,000 --> 00:00:04,000 They have to add up to 1. 3 00:00:04,000 --> 00:00:11,000 We subtract 4 x 0.1, which is 0.4, which is 0.6. 4 00:00:11,000 --> 99:59:59,999 That's a valid probability.