Number Series Puzzles Questions

3. What numbers should replace the question mark?
  What is the next number?
Answer
Ans = 47.
Each number is the sum of the previous two numbers i.e. 18 + 29 = 47.
4. Multiply the lowest even number in the grid by the highest odd number?
  What is the next number?
Answer
Ans = 2646.
(14 x 189).
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