Find the wrong term in the following series:
DWIK, HUML, LSQM, PQUN, TOXO ​​

Given: DWIK, HUML, LSQM, PQUN, TOXO

Logic: 1st letter + 4, 2nd letter - 2, 3rd letter + 4 and 4th letter + 1 place.

For, 1st letter

D + 4 = H, H + 4 = L, L + 4 = P, P + 4 = T

For, 2nd letter

W - 2 = U, U - 2 = S, S - 2 = Q, Q - 2 = O

For, 3rd letter

I + 4 = M, M + 4 = Q, Q + 4 = U, U + 4 $$\neq$$ X

For, 4th letter

K + 1 = L, L + 1 = M, M + 1 = N, N + 1 = O

So, TOXO is wrong term in the series.

Thus, correct option is (c).