Answer
True
Work Step by Step
$(a=1)AND(b=2)OR(c=3)$
$=(5=1)AND(2=2)OR(3=3)$
$=(False)AND(True)OR(True)$
Here we encounter a problem that which operation should we perform first AND or OR because the final answer will different for both cases. We can solve this problem by giving AND operator a higher priority than OR operator so AND will be calculated First.
$=(False)OR(True)$
$=True$