Question : Directions: Which letter cluster will replace the question mark (?) to complete the given series?
AZBY, BYCX, CXDW, ?, EVFU
Option 1: DWEV
Option 2: DVEW
Option 3: DWFV
Option 4: DVEU
Correct Answer: DWEV
Solution :
Given:
AZBY, BYCX, CXDW, ?, EVFU
Add 1 to the place value of the first and the third letters and subtract 1 from the place value of the second and fourth letters of the previous term to obtain the next term.
AZBY→A + 1 = B; Z – 1 = Y; B + 1 = C; Y – 1 = X
BYCX→B + 1 = C; Y – 1 = X; C + 1 = D; X – 1 = W
CXDW→C + 1 = D; X – 1 = W; D + 1 = E; W – 1 = V
DWEV→D + 1 = E; W – 1 = V; E + 1 = F; V – 1 = U
So, DWEV is the missing term in the given series. Hence, the first option is correct.
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