Question

A box contains 7 green, 5 yellow & 6 purple balls. Find the probability of yellow or purple ball in a single draw.

Answer 1

im guessing for yellow it will be: 5/18 ?

Answer 2

You have a total of 18 balls. So the probability of drawing only the yellow ball is:

5/18.

And the probability of drawing only the purple ball it's:

6/18=1/3.

Answer 3

can you help me with one more problem? :)

Answer 4

But if it's an "or" statement, then make sure to add them together so you answer the question. And sure =)

Answer 5

so what would be the final answer? 6/18?

Answer 6

No 6/18 is only the probability of finding the purple balls. Make sure you add yellow and purple to get the total probability of drawing a yellow OR a purple ball.

Answer 7

next question: Probability of an event is 10/11, what are the odds that the event will occur?

Answer 8

so 11/18 ? :)

Answer 9

yyeeeep. And garr odds. Odds are just the flipped fraction of finding the probability. So if the probability of an event, for example, it 4/6, the odds will be 6/4. Do the same with the number 10/11. =D

Answer 10

11/10 ? :)

Answer 11

yush. :)

Answer 12

thanks! and sorry, but can you check one problem that i did, and im not sure if it's right

Answer 13

lol np, and sure!

Answer 14

Nine people are entered in a race. If there are no ties, in how many ways can the first three places come out?
I got 472

Answer 15

Hmm. How did you get that?

Answer 16

idk, i multiplied random #'s..

Answer 17

I honestly don't know how to solve this o_O Since there's 3 places, there should be 3 people in that. So that means that 27 people could go into those three places....27 * 9 is 243 I believe...idk lol i don't wanna give you the wrong answer but that's what i think.

Answer 18

ohh okay!