Question

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

Answer 1

`|\Omega|=50`

A)

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

B)

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Answer 2

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.

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