A letter–number series with few terms missing is given below. Choose the missing terms from the given alternatives.
Z A 25, W _ 20, T G _ ,  _ J 10, N _ 5

Z A 25, W _ 20, T G _ ,  _ J 10, N _ 5

First letters:

Z − 3 → W, W − 3 → T, T − 3 → Q, Q − 3 → N

Second letters:
A + 3 → D, D + 3 → G, G + 3 → J, J + 3 → M

Numbers:
25 − 5 → 20, 20 − 5 → 15, 15 − 5 → 10, 10 − 5 → 5

Thus, correct option is (c).D 15 Q M