SOME COMPUTER STUFF ON C,JAVA,TALLY,BCA,SOLVED PAPERS

i=100 while [ $i -le 999 ] do n=$i num=$n s=0 r=0 while [ $n != 0 ] do r=` expr $n \% 10 ` s=` expr $s \* 10 \+ $r ` n=` expr $n \/ 10 ` done if [ $s -gt $num ] then s=` expr $s \- $num ` else s=` expr $num \- $s ` fi n=$s nu=$n s=0 r=0 while [ $n != 0 ] do r=` expr $n \% 10 ` s=` expr $s \* 10 \+ $r ` n=` expr $n \/ 10 ` done if [ $s -lt 100 ] then s=` expr $s \* 10 ` fi s=` expr $s \+ $nu ` if [ $s -eq 1089 ] then echo  $i fi i=` expr $i \+ 1 ` done

echo "Enter a number" read n i=1 c=0 while [ $i -le $n ] do if [ ` expr $n \% $i ` -eq 0 ] then c=` expr $c + 1 ` fi i=` expr $i + 1 ` done if [ $c -eq 2 ] then echo "Prime" else echo "Not a prime" fi

echo "ENTER A NUMBER" read n fact=1 while [ $n -ge 1 ] do fact=` expr $fact \* $n ` n=` expr $n - 1 ` done echo $fact