I have 4 quarters, 7 nickels, and 2 pennies in my wallet. I take them out of my wallet one at a time at random and don't put them back.

Question

anonymous · Answer

a) What is the probability that the last coin I pull out is a penny?
b)What is the probability that the fourth coin I pull out is a nickel and the seventh is a quarter?

skyz · Answer

A. would be all of the coins altogether number and the number of pennies you have over that number
So it would be 2/13

skyz · Answer

Gosh.. its been awhile since ive had a probablility questions

anonymous · Answer

Thanks, I got part A. Do you know how to get part B?

skyz · Answer

Nicole help LOl i dont know how to explain part b

anonymous · Answer

MARK. MY NAME IS MATH NOOBIE FOR A REASON *^ *

anonymous · Answer

OMFG UR SMART SCORE

skyz · Answer

Fine *Mathnoobie*

skyz · Answer

LOL

anonymous · Answer

o; ohhh ur going doowwwnnnn

skyz · Answer

Erma gersh just answer his/her question

skyz · Answer

-.-

anonymous · Answer

Mehhhhhhhh.................. :o

anonymous · Answer

Idurnoooo ; - ;

skyz · Answer

i think b is 2/3...

anonymous · Answer

Lol great answers

anonymous · Answer

@Skyz I also got 2/3 but I'm fairly certain it's wrong. Thanks for the help though :p

skyz · Answer

Mmk