DSSSB · Reasoning

Refer to the given number series and answer the question that follows. Counting to be done from left to right only. All numbers are single-digit numbers. (Left) 6 9 5 4 2 1 4 5 8 4 6 7 3 6 8 5 2 9 1 2 1 7 4 4 5 5 8 4 4 2 (Right) How many such prime digits are there, each of which is immediately preceded by an even digit and also immediately followed by an even digit?

  1. One
  2. Three
  3. Two
  4. More than three
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