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Depends. What's your shell? $(((RANDOM%100)+1)) should work instead of ${RANDOM} for bash or ksh.

# Clear the list of commandline parameters
set --

for X in 1 2
do
# Add a random number to the end of the parameter list
set -- "$@" "${RANDOM}"
done

echo "First number was...

The highlighted line above may be shortened as for i in {1..10}.

#!/usr/bin/ksh

echo "Enter 10 numbers"
for i in 1 2 3 4 5 6 7 8 9 10
do
read a
echo $a
done > numbers

They'd be in a file. The script, or the awk, read's the file, sums the numbers and presents the average. The 'input-file' or 'input-file-name' in the samples would be the name of your file that...