Given below are three statements, based on which some conclusions have been drawn. If the statements are TRUE, which of the conclusions can be said to be TRUE? Statement 1: Visuals can either be abstract or non-abstract. Statement 2: All logos are abstract visuals. Statement 3: All photographs are non-abstract visuals.

Which concept(s) does this image by Escher illustrate? [Figure: see page 10 of source PDF]

It is recommended to keep an automobile’s petrol tank full or nearly full at all times. Which of the options could be the reason(s) for this recommendation?

Frequent use of the mouse and the keyboard can lead to physiological problems. Shaktimaan has been working on his college project report for several hours a day for many days using poorly designed furniture. Which of the following problems could he face?

The rear view mirror in an automobile often has a warning that reads, "OBJECTS IN THE MIRROR ARE CLOSER THAN THEY APPEAR". Which of the options is/are the correct implication(s) of this warning?

Goethe said, "Doubt grows with knowledge". From this perspective which of the following statements is/are TRUE?