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5 votes
A bag holds 1 blue block and 3 yellow blocks. How

many green blocks should be added to the bag to make
the probability of randomly selecting a green block
from the bag equal to 1/2?

1 Answer

6 votes
1 block + 3 blocks = 4 blocks total
you need to add 4 green blocks so the total is now 8 blocks and 4 is half of 8
hope you understand this :)
User Dalissa
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