The symbols O$, *, \Delta$, and $\square$ are to be filled, one in each box, as shown below.

The rules for filling in the four symbols are as follows.

1) Every row and every column must contain each of the four symbols.

2) Every 2 × 2 square delineated by bold lines must contain each of the four symbols.

Which symbol will occupy the box marked with ‘?’ in the partially filled figure?

A person was born on the fifth Monday of February in a particular year. Which one of the following statements is correct based on the above information?

Which one of the groups given below can be assembled to get the shape that is shown above using each piece only once without overlapping with each other? (rotation and translation operations may be used).

Four girls P, Q, R and S are studying languages in a University. P is learning French and Dutch. Q is learning Chinese and Japanese. R is learning Spanish and French. S is learning Dutch and Japanese.

Given that: French is easier than Dutch; Chinese is harder than Japanese; Dutch is easier than Japanese, and Spanish is easier than French.

Based on the above information, which girl is learning the most difficult pair of languages?