Puzzle 4:

D. Rotate bottom right about its centre by 90degrees, rotate top left. Except for the first row is in the wrong order. Otherwise F could be the right answer.

Puzzle 10:

C. By rows, vertical lines become inward semi-circles, which become outward semi-circles; by columns, the horizontal lines are transformed.

Puzzle 4:

D. Rotate bottom right about its centre by 90degrees, rotate top left. Except for the first row is in the wrong order. Otherwise F could be the right answer. But middle row to bottom row is switch top right, so definitely D.

Puzzle 10:

C. By rows, vertical lines become inward semi-circles, which become outward semi-circles; by columns, the horizontal lines are transformed.

Puzzle 4:

D. Rotate bottom right about its centre by 90degrees, rotate top left. Except for the first row is in the wrong order. Otherwise F could be the right answer.

Puzzle 10:

C. Lines become inward semi-circles, which become outward semi-circles.

Puzzle 4:

D. Rotate bottom right about its centre by 90degrees, rotate top left. Except for the first row is in the wrong order. Otherwise F could be the right answer.

Puzzle 10:

C. By rows, vertical lines become inward semi-circles, which become outward semi-circles; by columns, the horizontal lines are transformed.