UPSC CSE Prelims 2003 Q4 — Science & Technology PYQ with Answer

Three flags, each of different colour, are available for a military exercise.

Using these flags, different codes can be generated by waving

i) a single flag of different colours, or

ii) any two flags in a different sequence of colours, or

iii) three flags in a different sequence of colours.

The maximum number of codes that can be generated is