DSSSB · Reasoning

If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 4218637, what will be the sum of the digits which are first from the left and first from the right in the new number thus formed?

  1. 13
  2. 12
  3. 10
  4. 7
Answer and detailed solution are available in the protected study screen.
Register or login to attempt