A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
HIG, EFD, BCA, ?, VWU
- AABZ
- BXYW
- CZAY
- DYZX
Solution & Step-by-step Explanation
Let us trace the pattern by analyzing the first letter of each grouping:
H(8)
−3
E(5)
−3
B(2)
−3
Y(25)
−3
V(22)
So, the first letter of the missing term must be Y.
Let us double check the inner pattern within each term group:
HIG: H(8)
−1
I(9) [or rather, standard letter layout: H,I followed by G which is H−1]. The structure is Letter
1
, Letter
1
+1, Letter
1
−1.
H,I,G→8,9,7
E,F,D→5,6,4
B,C,A→2,3,1
Applying this to Y: Y(25),Z(26),X(24)→YZX
V,W,U→22,23,21
Hence, the missing group is YZX.
H(8)
−3
E(5)
−3
B(2)
−3
Y(25)
−3
V(22)
So, the first letter of the missing term must be Y.
Let us double check the inner pattern within each term group:
HIG: H(8)
−1
I(9) [or rather, standard letter layout: H,I followed by G which is H−1]. The structure is Letter
1
, Letter
1
+1, Letter
1
−1.
H,I,G→8,9,7
E,F,D→5,6,4
B,C,A→2,3,1
Applying this to Y: Y(25),Z(26),X(24)→YZX
V,W,U→22,23,21
Hence, the missing group is YZX.