Answer
Probability that the player is not a guard is
$P$(Player is not a guard) $= \frac{214}{368} = 58.1522$%
Work Step by Step
Probability (an event) = No of favorable outcomes / Total no of outcomes.
Favorable outcomes = player is not a guard = player is a forward or center = $152 + 62 = 214 $ players.
Total No of outcomes = $368$ players.