Question : Directions: Which of the following letter clusters will replace the question mark (?) in the given series?
XF, UI, RL, OO, ?
Option 1: KS
Option 2: KR
Option 3: LS
Option 4: LR
Correct Answer: LR
Solution :
Given:
XF, UI, RL, OO, ?
In the above-given series, subtract 3 from the place value of the first letter and add 3 to the place value of the second letter.
XF→X – 3 = U; F + 3 = I
UI→U – 3 = R; I + 3 = L
RL→R – 3 = O; L + 3 = O
OO→O – 3 = L; O + 3 =
R
So, the next term of the series is LR. Hence, the fourth option is correct.
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