230k views
2 votes
PLEASE HELP *i'm assuming that by odds it is asking for the probability*

one coin is randomly selected from a jar containing 20 pennies, 15 nickels, 3 dimes and 12 quarters. find the odds of each outcome. write in simplest form.

A) a penny B) a penny or nickel

User Felina
by
6.6k points

2 Answers

3 votes


|\Omega|=50

A)


|A|=(20)/(50)=(2)/(5)

B)


image

User Halacs
by
7.0k points
4 votes

we have 20 pennies, 15 nickels, 3 dimes and 12 quarters, so the sample space of the jar is simply 20+15+3+12 = 50.


A)


sample space is 50, favorable outcomes is well, there are 20 pennies, so 20,


\bf \cfrac{20}{50}\implies \cfrac{2}{5}\implies 0.4\implies 0.4\cdot 100\implies \stackrel{\%}{40}


B)


something to keep in mind is that the keyword AND means multiplication, and the keyword OR means addition.


there are 20 pennies and 15 nickels.



image

User Solublefish
by
7.3k points