PHP
1 .Prime number pgm <?php function isPrime($number) { if($number<=1) { return false; } for($i=2;$i<=sqrt($number);$i++) { if($number%$i==0) { return false; } } return true; } function displayprimesInRange($start,$end) { $primes=[]; $primeCount=0; for($i=$start;$i<=$end;$i++) { if(isPrime($i)) { $primes[]=$i; $primeCount++; } } echo "prime numbers between $start and $end are:".implode(",",$primes)."</br>"; echo "total number of prime numbers:$primeCount<br>"; } $start=3; $end=10; displayprimesInRange($start,$end); ?> 2. Message passing pgm <html> <head> <title>Message Passing</title> </head> <body> <center> <form...