anonymous
  • anonymous
Barbara draws pens randomly from a box containing 5 pens of the same shape and size. There is 1 green pen, 3 red pens, and 1 blue pen. She draws 1 red pen and then another red pen without replacing the first one. Find the probability of drawing 1 red pen followed by another red pen, and show the equation used.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
1/5 + 1/4...or am I doing it incorrectly? It is multiplying isnt it?
anonymous
  • anonymous
@Valpey
Valpey
  • Valpey
It is multiplying, but you have the right idea although you want 3 red pens in the numerator to start, not 1.

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Valpey
  • Valpey
\[\frac{red\ pens}{all\ pens} *\frac{remaining\ red\ pens}{all\ remainin\ pens} = \frac{3}{5}*\frac{2}{4} = \]
anonymous
  • anonymous
OKAY! Thanks so much for your help! :)

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