Which letter-cluster will replace the question mark (?) and complete the given series?
UTSR, XWVU, ?, DCBA, GFED
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. AZYX.
Given series: UTSR, XWVU, ?, DCBA, GFED
U + 3 = X; X + 3 = A; A + 3 = D; D + 3 = G
T + 3 = W; W + 3 = Z; Z + 3 = C; C + 3 = F
S + 3 = V; V + 3 = Y; Y + 3 = B; B + 3 = E
R + 3 = U; U + 3 = X; X + 3 = Y; A + 3 = D