1. 

Seven men A, B, C, D, E, F and G are standing in a queue in that order. Each one is wearing a cap of different colour like violet, indigo, blue, green, yellow, orange and red. D is able to seen in front of him green and blue but not violet. E can see violet and yellow but not red. G can see caps of all colours other than orange. If E is wearing an indigo coloured cap, then the colour of the cap worn by F is

A. Blue
B. Violet
C. Red
D. Orange

Answer: Option C

Explanation:

Arrangement in queue is as follows

A ---> Yellow or Green or Blue

B ---> Yellow or Green or Blue

C ---> Yellow or Green or Blue

D ---> Violet

E ---> Indigo

F ---> Red

G ---> Orange

Hence, from the above arrangement, F worn red colour cap.