Question

How many vehicle registration plate numbers can be formed with digits 1,2,3,4,5 (no digits being repeated) if it is given that the registration number can have 1 to 5 digits?

Answer 1

Answer:

Step-by-step explanation:

No. of number plates with one digit will be 5

No. of number plates with two digits will be 5*4=20

No. of number plates with three digits will be 5*4*3= 60

No. of number plates with four digits will be 5*4*3*2= 120

No. of number plates with five digits will be 5*4*3*2*1= 120

Therefore total no. of number plates = 120+120+60+20+5

= 325