Question 27
Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
WXYZ, YZWX, ABUV, CDST, ?
Solution
WXYZ ==> (W+2) (X+2) (Y-2) (Z-2) ==> YZWX
YZWX ==> (Y+2) (Z+2) (W-2) (X-2) ==> ABUV
ABUV ==> (A+2) (B+2) (U-2) (V-2) ==> CDST
CDST ==> (C+2) (D+2) (S-2) (T-2) ==> EFQR
So here 'EFQR' will come in place of the question mark.
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