mathematical probability

Algebra
Tutor: None Selected Time limit: 1 Day

a box is filled with 2 blue cards, 2 yellow cards, and 16 red cards. A card is chosen at random from the box. What is the probability that it is a blue or a red card?  I got 9/10 Help help

Aug 22nd, 2015

Thank you for the opportunity to help you with your question!

the total # cards is 20,   the number of blue or red cards 18, so the probability is 18/20, or 9/10, you are right   

Please let me know if you need any clarification. I'm always happy to answer your questions.
Aug 22nd, 2015

thanks brother 10 stars

Aug 22nd, 2015

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Aug 22nd, 2015
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Aug 22nd, 2015
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