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TotesAdorbs12
The chance of a coin landing on tails is 50%, so 20*0.5=10.  (0.5, is 50 percent)
thewisestudent9

Hey!

Hope this helps...

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We know that every coin has 2 sides, and we want to flip this coin 20 times.

So 20/2 = 10

Therefore you will have the possibility to get tails 10 times...