Popping an element . To add an elememnt onto a stack is called Pushing an element. 

NO

import java.util.Scanner;

class SimpleInterest {

public static void main(String arg[]) {

double princ, si;

float rate;

int time;

Scanner sc = new Scanner(System.in);

System.out.print("Enter Principal Amount: ");

princ = sc.nextDouble();

System.out.print("Enter Rate of Interest: ");

rate = sc.nextFloat();

System.out.print("Enter Time (in Years) : ");

time = sc.nextInt();

si = (princ * rate * time) / 100;

System.out.println("Interest Amount: " + si);

}

}

function jst()

{ var i = 0;

i = <?php echo 35; ?>

alert(i);

}

Above code snippet is one way to write your whole JavaScript code gets processed by PHP

If you have individual .js files, and you don't want PHP to process them (for example, for caching reasons), then you can just pass variables around in JavaScript

Advantages:

• Speed. Client-side JavaScript is very fast because it can be run immediately within the client-side browser. 
• Simplicity. JavaScript is relatively simple to learn and implement.
• Popularity. JavaScript is used everywhere in the web. The resources to learn JavaScript are numerous. 
• Versatility. Nowadays, there are many ways to use JavaScript through Node.js servers.

Javascript uses Boolean() function to find out if an expression (or a variable) is true or false

option B is correct. int arr[][]

c. int[] arr = new int[3];

Both PHP and javascript are scripting languages. But php is bound to the server side and javascript is bound to the client side. A user need not do anything if he/she wants to use a PHP site because the server hosting the php application puts up with the computing involved in it.

While Python can be more user-friendly than Java, as it has a more intuitive coding style, both languages do have their unique advantages for developers and end users. However, if you are just beginning your path towards a programming career, you might want to start by learning Python, as it is less complex.