Question 1101418
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The game costs $3 to play.
If you roll 3 or 5, you win $5, so you gain $2 ("+2").
If you roll 1, 2, 4, or 6, you win nothing, so you lose $3 ("-3").<br>
The expected value is then
{{{(2/6)*(+2) + (4/6)*(-3) = 2/3 - 2 = -(4/3)}}}
On average, you should expect to lose $4 for every 3 games played.