Three are 6 different flags. Find the number of signals which can be formed with the help of at least 3 flags.

There are 6 different flags. Find the number of signals which can be formed with the help of at least 3 flags.

The total number of signals that can be made with 7 different coloured flags is

The total number of signals than can be made with 5 different coloured flags is

Using 6 different flags, how many different signals can be made by using atleast three flags, arranging on above the other ?

Given four flags of different colours, how many different signals can be generated if each signal requires to use of 3 flags. One below the other ?

A tricolour flag is to be formed having three adjacent strips of three different colours choosen from 6 different colours. How many different coloured flags can be formed with different design in which allthe three different coloured flags can be formed with different design in which all the three strips are always in horizontal positions ?