Given 5 flags of different colours, how many different signals can be

1.	Given 5 flags of different colours, how many different signals can be genereach signal requires the use of 2 flags, one below the other?
Answer» incomplete questions. . incomplete questions. . First place can be filled up in 5 ways.After filling first place,we are left with 4 flags. ∴∴The second place can be filled up in 4 ways. The total number of signals which can be generated =5×4=20 the correct answer is 40

Given 5 flags of different colours, how many different signals can be genereach signal requires the use of 2 flags, one below the other?

Answer»

incomplete questions. .

First place can be filled up in 5 ways.After filling first place,we are left with 4 flags.

∴∴The second place can be filled up in 4 ways.

The total number of signals which can be generated =5×4=20

the correct answer is 40