Question 1147719
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Expected winning is  -5 + {{{15/10}}} + {{{7*(5/10)}}} = -5 + 1.5 + 7*0.5 = 0.00 dollars.    <U>ANSWER</U>


In this solution,  {{{1/10}}}  is the probability to pick up a two.


{{{5/10}}} is the probability to pick up an odd number.


-5 is the cost to play.
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This solution and this answer assumes that the experiment &nbsp;(the game) &nbsp;is repeating many times.


Otherwise, &nbsp;the notion &nbsp;"Math expectation" &nbsp;is not applicable.