Picture Puzzles Questions

3. Which yield should replace the question mark?
  What is the next number?
What is the next number?
Answer
Ans = E.
Each line across and down contains one each of the three symbols. In each line one symbol is black, and one is upside down.
4. What comes next?
  What is the next number?
What is the next number?
Answer
Ans = A.
Looking across the squares, the top left corner alternates one line/two lines/three lines; the top corner alternates line right vertical/line left vertical; at the bottom left corner alternates top horizontal/bottom horizontal and the bottom right corner alternates diagonal between opposite corners.
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