Question

Suppose you draw two tennis balls from a bag containing seven pink, four white, three yellow, and two striped balls. What is the probabililty of getting yellow and pink balls with replacing?

Answer 1

one yellow and one pink, you mean?

Answer 2

yeah

Answer 3

ok hold on a sec

Answer 4

k

Answer 5

100 out of 256, if the order of the yellow and pink doesn't matter

Answer 6

can you write out how you got that?( like the different steps under one another)?

Answer 7

well first you need to find the total possibilities.
Which is 16x16, because there are 16 total. that is 256.
The possibility of getting pink or yellow is 7+3=10.
So 10x10=100/256.
Also, I forgot, you can simplify.
100/256. Divide by 4. 25/64.

Answer 8

thanks:)

Answer 9

no problem

Answer 10

ok.... so whats the probability of getting a pink one and a striped one without replacing?

Answer 11

without replacing, the total possiblities changes.
instead of 16x16, its 16x15. 240.
pink and striped is 7+2 9 total. but because there is no replacing it is not 9x9,
it is 9x8. 72.
So 72 over 240. Simplify.
Divide by 4. 13/60.

Answer 12

thanks! i have a lot more though! can you stay and help me?

Answer 13

ok

Answer 14

YAY! thanks so much! ok so still doing this, whats the probability of getting two pink balls with replacing?

Answer 15

7x7=49. Remember 256 possibilities for replacing. so
49/256. Can't simplify that.

Answer 16

any more?

Answer 17

YEAH A LOT!