Question

the number of signals that can be made with 3 flags each of different colour by hosting 1 or 2 or 3 above the other is

Answer 1

Answer:

15

Step-by-step explanation:

Number of signal that can be made,

⇒ Using flag 1 is  

3

P

1

​

=3

⇒ Using 2 flags  

3

P

2

​

=6

⇒ Using 3 flags  

3

P

3

​

=6

So, total signed 3+6+6

=15

Hence, the answer is 15.