Marina bought 4 notebooks, which cost b dollars each and 3 pens, which cost c dollars each. How much money did Marina spend?
2 answers:
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Calculate the probability of drawing 4 red balls and then 4 green balls as shown;
P(4R+4G)=(
)(
)(
)(
)(
)(
)(
)(
)
P(4R+4G)=0.00308 chance
The denominators are decreasing as the balls get taken out.
Hope I helped :)
P(4R+4G)=(
P(4R+4G)=0.00308 chance
The denominators are decreasing as the balls get taken out.
Hope I helped :)