Amrita's marbles 🔮 (Probability)

A: 2
B: 4
C: 8
D: 12
E: 18

Hint:
If the probability of red marbles = 1/2
That means, total red marbles = 1/2 of the total 36
Total red marbles = 18

So,
Red + Blue + Yellow = 36
18 + 16 + Yellow = 36.

Solve to know the number of yellow marbles in the bag.