Question

How many signals can be given from four flags, when
(a) all the flags are used​

Answer 1

Answer:

24

Step-by-step explanation:

As we have to use all four flag

So at first place we can put 4 flag

at second place we can use only 3 flag as one flag is already used

at third place we can use 2 flag

at fourth place we can use 1 flag

so signal formed are 4×3×2×1 = 24

Answer 2

How many signals can be given from four flags, when

(a) all the flags are used