Question

Ten slips of paper labeled from 1 to 10 are placed in a hat. The first slip of paper is not replaced before selecting the second slip of paper.

What is the probability of selecting a number less than 2 then a number greater than 7?

Answer 1

Welcome to Question Cove

Answer 2

Thank you! :)

Answer 3

Well let's see, there is 10 possibilities right?
How many numbers are less then 2? 1 (1)
How many numbers are greater then 7? 8 9 10 (3)
1+3=4

so 4 outta 10 chance for the first one

Answer 4

Simplified that's 2/5
decimal 0.4
or a 40% chance on the first go.

Answer 5

@alis

Answer 6

that's a good attempt but that's not quite what the question is asking

it is asking "what is the probability of getting a number less than 2 [on the fist try] THEN a number greater than 7" (not assuming replacement)

so for the first draw it's 1/10, then for the second draw it's 3/9 (no replacement)

so (1/10)*(3/9) ---> simplify

Answer 7

Wow Ultri tried helping O:

Answer 8

so rare

Answer 9

And me being wrong, is why I don't do it often :P

Answer 10

sorry for slipping out so suddenly but um thank you for the help @Vocaloid! also, thx for trying to help @Ultrilliam lol it's very appreciated

Answer 11

No problem! ^_^