DSSSB · Reasoning

Refer to the following number series and answer the question given below (all numbers are single-digit numbers). The calculation is to be done from left to right only. (Left) 6 8 7 2 1 6 5 3 4 8 2 5 9 1 6 4 3 7 6 3 9 1 7 (Right) How many such even numbers are there, each of which is immediately preceded by an odd number and immediately followed by an even number?

  1. Two
  2. Three
  3. Four
  4. One
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