Adam has 4 dimes, 4 quarters and 4 nickels in his pocket. He pulls out 2 coins making sure to put the first one back in his pocket before picking the second. What are the odds that he pulls out 2 nickels?

Question

cwrw238 · Answer

don't just give the answer princess  explain how you got it

cwrw238 · Answer

her answer makes no sense anyway

he has a total of 12 coins in his pocket of which 4 are nickels

so what are the odds he pols out a nickel?

anonymous · Answer

You have to multiply P(getting one nickel)*P(getting one nickel) where P(getting one nickel) = (4 nickels)/(4 nickels+4 dimes +4 quarters)

anonymous · Answer

4/12 ?

cwrw238 · Answer

right
so P( 1 nickel)  = 4/12 = 1/3

anonymous · Answer

thank you bro

cwrw238 · Answer

yw

cwrw238 · Answer

though i'm female!
P(another nickel)  is also 1/3

anonymous · Answer

thank you madam :p

cwrw238 · Answer

the 2 picks are independent events

and are therefore multiplied together

so the final answer is 1/3 *  1/3

anonymous · Answer

so its 1/9 ?