00:01
Okay, we have then five questions and each question will say could be answer a, b or c, three choices for each question.
00:11
So if you guess, then there are three to choose from.
00:15
That's your sample space, a, b or c.
00:17
Only one is correct.
00:19
So they have a one third chance of guessing correctly.
00:23
Which means wrong must be two times out of three.
00:27
You're right or you're wrong, add them up, you get one.
00:30
Now what i want is 4 or more correct.
00:35
So that could be 4 or 5 correct...