Question : Directions: Select the letter cluster that will replace the question mark (?) in the following series.
RBT, OER, KIP, FNN, ZTL, ?
Option 1: RAJ
Option 2: SBJ
Option 3: SAJ
Option 4: SAK
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Correct Answer: SAJ
Solution :
Given:
RBT, OER, KIP, FNN, ZTL, ?
Subtract consecutive numbers from the first letter, add consecutive numbers to the second letter, and subtract 2 from the third letters of the previous term to obtain the next term in the series –
RBT→R – 3 = O; B + 3 = E; T – 2 = R
OER→O – 4 = K; E + 4 = I; R – 2 = P
KIP→K – 5 = F; I + 5 = N; P – 2 = N
FNN→F – 6 = Z; N + 6 = T; N – 2 = L
ZTL→Z – 7 = S; T + 7 = A; L – 2 = J
So, SAJ is the missing term in the series. Hence, the third option is correct.
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