Which letter-cluster will complete the blank spaces in the given letter series…
2013
Which letter-cluster will complete the blank spaces in the given letter series sequentially?
QST_, QS_R, Q_TR, _STR
- A.
SQTR
- B.
RTSQ
- C.
TRQS
- D.
TSRQ
Attempted by 5 students.
Show answer & explanation
Correct answer: B
Each group in the series is built from the same four letters Q, S, T, R, with exactly one position left blank. To complete the series sequentially, fill each blank one after another:
Term 1: QST_ — the missing 4th letter is R, giving QSTR.
Term 2: QS_R — the missing 3rd letter is T, giving QSTR.
Term 3: Q_TR — the missing 2nd letter is S, giving QSTR.
Term 4: _STR — the missing 1st letter is Q, giving QSTR.
Reading the filled-in letters in order (term 1, 2, 3, 4) gives R, T, S, Q. Hence the required letter-cluster is RTSQ.