Question

Number of signals can be made with 4 flags when one flag is used at a time are

Answer 1

Step-by-step explanation:

(iv) taking 4 at a time=4P4=(4×3×2×1)=24.

Hence, by the fundamental principle of addition, the total number of signals =(4+12+24+24)=64

Answer 2

The required number of signals is 40

Given:

Number of signals can be made with 4 flags

To Find:

Number of signals can be made with 4 flags when one flag is used at a time

Solution:

Number of signals using one flag,

= 4P1

= 4

Number of signals using two flags,

= 4P2

= 12

Number of signals using three flags,

= 4P3

= 24

Therefore, required number of signals

= 4+12+24

= 40

Hence, the required number of signals is 40

#SPJ2