Which letter-cluster will replace the question mark (?) to complete the given series?
KLHO, LKIN, ?, QFNI, UBRE
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. NIKL.
Given series: KLHO, LKIN, ?, QFNI, UBRE
K + 1 = L; L + 2 = N; N + 3 = Q; Q + 4 = U;
L - 1 = K; K - 2 = I; I - 3 = F; F - 4 = B;
H + 1 = I; I + 2 = K; K + 3 = N; N + 4 = R;
O - 1 = N; N - 2 = L; L - 3 = I; I - 4 = E