Missing Number Puzzles Questions

13. Which is the missing section?
  What is the next number?
What is the next number?
Answer
Ans = B.
Lines across proceed +2, -3, +2. Lines down proceed -3, +2, -3.
14. What number should replace the question mark?
  What is the next number?
Answer
Ans = 5.
(6 + 8) – 9
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