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?
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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
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