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Mary has six cards whose front sides show the numbers 1,2,3,4,5 and 6. She turns the cards face-down, shuffles the cards until their order is random, then pulls the top two cards off the deck. What is the probability that exactly one of those two cards shows a square number?

 Oct 11, 2020
 #1
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Favorable/Possible

 

Possible=6C2=15

Favorable= 8:

1,2

1,3

1,5

1,6

4,2

4,3

4,5

4,6

8/15

 Oct 11, 2020

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