Question

A home security system provides a security code for the door ,which consists of 5 buttons.code may be generated by pressing anr one button,any two,any three.any four,or all fives buttons.how many such codes are possible

Answer 1

Answer:

we an use n factorial concept in this type of sum

all u hv to do is

5×4×3×2×1=120

Therefore, we get 120 codes

Hope it helps you

Please mark as brainliest

Answer 2

Answer:

5×4×3×2×1=120.

120 codes