A simple program that I wrote using Bash shell to ask the user to give three numbers and then the program will compute the sum and average of three numbers and display the results on the screen.

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printf "\tAverage of Three Numbers in Bash"
printf "\n\n"
echo "Give first number: "
read a
echo "Give  second number: "
read b
echo "Give third number: "
read c
sum=`expr $a + $b + $c`
avg=`expr $sum / 3`
printf "\n"
echo "The Total Sum is $sum."
printf "\n"
echo "The Average is  $avg."
printf "\n\n"

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