Lovelace32 Lovelace32
  • 13-10-2017
  • Mathematics
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There 20 colored pencils in a box:4 red, 5 green, 10blue , and 1 black. You pick a pencil without looking. What is the sum of the probability of picking a red pencil and the probability of picking a black pencil

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raghadhajar2001
raghadhajar2001 raghadhajar2001
  • 13-10-2017
5/20. Simplify 1/4. You just add the number of the desired colors, over the total number.
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