lopezemma469 lopezemma469

13-02-2019
Mathematics

contestada

Betty empties her piggy bank, which contains 210 coins, onto her desk
How many of the coins would you expect to be heads up

Respuesta :

19-02-2019

assuming that all the coins are homogeneous, the probability of each coin be on heads is 1/2. so:

[tex]210 \times \frac{1}{2} = 105 \: coins[/tex]

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