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Mathematics 13 Online
OpenStudy (bloomlocke367):

Tina puts the letters of the word RADAR on pieces of paper and puts them in a bag. What is the probability she will draw an R twice?

OpenStudy (bloomlocke367):

@rational

OpenStudy (rational):

is that the complete question ?

OpenStudy (bloomlocke367):

yes

OpenStudy (rational):

it doesnt specify how many times the experiment was conducted hmm

OpenStudy (bloomlocke367):

is it 2/5 plus 2/5?

OpenStudy (rational):

question is not clear enough

OpenStudy (bloomlocke367):

oops, I so left out two sentences XD sorry

OpenStudy (bloomlocke367):

Tina puts the letters of the word RADAR on pieces of paper and puts them in a bag. She draws two letters without looking. The first piece of paper is replaced before the second one is drawn. What is the probability she will draw an R twice?

OpenStudy (bloomlocke367):

sorry. XD

OpenStudy (rational):

there are a total of 5 letters and 2 R's

OpenStudy (bloomlocke367):

yes...

OpenStudy (bloomlocke367):

and you do it twice. so is it 2/5 + 2/5?

OpenStudy (rational):

you need to multiply

OpenStudy (rational):

2/5 * 2/5

OpenStudy (bloomlocke367):

oh, okay, I didn't know if it was multiplication or addition.

OpenStudy (bloomlocke367):

so 4/25?

OpenStudy (rational):

yes!

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