Write a program which can print the following sequences: Sample Output: 1, 10, 100, 1000, ……, N 1, 3, 6, 10, 15, ……, N

Problem number : 1 

Write a program which can print the following sequences:

Sample Output:

1, 10, 100, 1000, ……, N

1, 3, 6, 10, 15, ……, N

Solution for this problem :

<?php

//echo "Hello World !";

echo "<br/>";

$a=1;

 

for($i=0;$i<4;$i++){

echo $a;

echo ",&nbsp;";

$a=$a*10;

}

echo "...... , N";

echo "<br/>";

echo "<br/>";

$n=1;

for($j= 0; $j < 5; $j++){

$res = $n*($n+1)/2;

echo $res;

$n++;

echo ",&nbsp;";

}

echo "...... , N";

echo "<br/>";

echo "<br/>";

?>

Sample Output:

1, 10, 100, 1000, ……, N

1, 3, 6, 10, 15, ……, N