duncanjake19p4ns9b duncanjake19p4ns9b

08-05-2018
Mathematics

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A cup has 4 pencils, 3 black pens, 1 blue pen, and 5 red pens. What is the probability of selecting a black or blue pen?

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BladeOfTheMoon BladeOfTheMoon

08-05-2018

The probability of selecting a black or blue pen is 4 out of 13. You calculate this by adding the amount of pens together and comparing it to the total amount of pens and pencils in the cup.

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Аноним Аноним

08-05-2018

4 out of 13 because in total there are 13 supplies in all and if you add 3 black pens PLUS 1 blue pen that will be 4.

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