Problem $10.($Factorial Function$)$ Write a program called

factorial.py that accepts $n($int$)$ as command$-$line argument, and

writes to standard output the value of $n!,$ which is defined as $n12$dots$(n-1)n.$ Note that $01.$

$-/$workspace$/$controlflow$\_$programs

$ python$3$

factorial.py $0$

$1$

$ python$3$

factorial.py $5$

$120$

Problem $11.($Fibonacci Function$)$ Write a program called

fibonacci.py that accepts $n($int$)$ as command$-$line argument, and

writes to standard output the $n$th number from the Fibonacci sequence $(0,1,1,2,3,5,8,13,$dots$).$

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$ python$3$ fibonacci, py $10$

$55$

$ python$3$ fibonacci,py $15$

$610$

Problem $12.($Primality Test$)$ Write a program called primality$\_$test,py that accepts $n($int$)$ as command$-$line argument, and

writes to standard output if $n$ is a prime number or not.

$2-\%/$workspace$/$controlf$1$on$/$programs

$8$ python$3$ primality$\_$test, py $31$

True

False