Question

Given the sequence of terms, AD CG FK JP, the next term is

Choose one option
Official answer and solution
Official answer
A
From
Official GATE 2012 answer key

Solution

Identify the positional progression in the two-letter sequence AD, CG, FK, JP.

  1. Convert letters to 1-based alphabet indices:
  • AD: (1, 4)
  • CG: (3, 7)
  • FK: (6, 11)
  • JP: (10, 16)
  1. Analyze first letter indices:
1→+23→+36→+410→+5151 \xrightarrow{+2} 3 \xrightarrow{+3} 6 \xrightarrow{+4} 10 \xrightarrow{+5} 15

Position 15 corresponds to letter O.

  1. Analyze second letter indices:
4→+37→+411→+516→+6224 \xrightarrow{+3} 7 \xrightarrow{+4} 11 \xrightarrow{+5} 16 \xrightarrow{+6} 22

Position 22 corresponds to letter V.

  1. Next term is OV, matching option (A).
Final answer

A

The answer is the one in the official GATE answer key. The solution is this site's own explanation.

Source

Paper
GATE 2012 Computer Science and Information Technology (CS)
Question
65 of 65, printed as GA Q.65
Section
General Aptitude

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