In the given figure, how many cardboard boxes are not white?

If SPANK is coded as PSNAK, then THROW is coded as 

A total of 78 soldiers were standing in a row. Ram Singh was standing at the 25th position from the left. Kuldeep Singh was standing at the 20th position from the right. How many soldiers were standing between Ram Singh and Kuldeep Singh?

Jyothi said to Chitra, “Father of your daughter is the son of my brother”. How is Jothi‟s brother related to Chitra’s daughter? 

In the following question, select the number which can be placed at the sign of question mark(?) from the given alternatives.

Six friends A, B, C, D, E and F are sitting in a row facing East. C is between A and E. B is just to the right of E but left of D, F is not at the right end. Who is at the right end? 

20 : 30 : : ? : 72 

A group of 1600 persons consisting of captains and soldiers is travelling in a train. For every 15 soldiers there is one captain. The number of captains in the group is?