In the sequence M, N, O, ?, Q, R, what character is missing?

A. P

If '?' represents multiplication and '?' represents division, what is the value of 12 ? 4 ? 3?

B. 36

In a race of 15 participants, Alice finishes 5th. If she swaps positions with the person who finishes 10th, what will be her new rank?

C. 6TH

A person walks at a speed of 5 km/h. How long will it take him to walk 15 km?

B. 2.5 HOURS

Given the input: 'red blue green yellow', what is the output after rearranging by color spectrum order?

A. RED GREEN BLUE YELLOW