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HI!!

you got a clue or you want to go real slow?

hi again lol

I kinda have a clue but im not sure

ok so lets take it step by step
how many marbles are in the bag total?

ok and how many are blue?

ok good, so what is the probability that the first one selected is blue?

ummm

4/8?

make a guess, if you are wrong i will tell you

yeah
\[\frac{4}{8}\] except that you really want to say \(\frac{1}{2}\) same thing

oh ok

now you put the marble back (it says that) so you still have 4 blue marbles in the bag and 8 total

oh so it would be 1/2 again?

i.e.
\[\frac{1}{2}\times \frac{1}{2}\]

hope that is more or less clear

Yeah makes sense

k good