C is ranked 12th from the top and 9th from the bottom in a competition. How many participants are there in total?

C. 22

Choose a word similar to the group: 'calm, serene, tranquil'.

B. PEACEFUL

In a mixed letter coding, if 'SUN' is coded as '456' and 'MOON' is coded as '1234', what is the code for 'N'?

A. 4

If A × B means A is the sister of B, A + B means A is the brother of B, and A - B means A is the father of B, what is the relationship of C if A × C - B?

B. C IS THE DAUGHTER OF A

If a train travels at a speed of 90 km/h, how long will it take to cover a distance of 270 km?

B. 3 HOURS