Question

You have a bowl with papers inside with numbered 1 through 25.
What is the probability of picking a number less than 10 or a 7 from the bowl?
a.) P(less than 10 or 7) = _ / _

Answer 1

P(<10 or 7) = P(<10)

Answer 2

what?

Answer 3

Isn't 7 < 10?

Answer 4

yes

Answer 5

So, if you get a 7, isn't that < 10?

Answer 6

The final answer needs to be a fraction.

Answer 7

Right. And you can use this fact to solve it: P(<10 or 7) = P(< 10). What is P(<10)? P(7) is a Red Herring.

Answer 8

oh ok

Answer 9

ITS PROB 8/25 OR 7/25

Answer 10

ITS PROB 8/25 OR 7/25

Answer 11

No, that's not correct, and you should read the Code of Conduct and heed its wisdom.

p(<10) = p(1 or 2 or 3 or ... or 9) = 9/25