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3 years ago

11

A combination lock has numbers 0-49 on it. How many different 3-digit lock

1 answer:

Harman [31]3 years ago

3 0

Answer:

19,600

Step-by-step explanation:

0-49=50 numbers

n=50

r=3

C(n,r)=n!/(r!(n-r)!)

=50!/(47!)(3!)

C(n,r)=C(50,3)

=50!/(3!(50−3)!)

= 19600

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