Consider the following program segment in which the statements are jumbled.
Choose the correct order of statements to calculate and return the factorial of 4.

for(k = 1; k <= 4; k++) → 1
return fa; → 2
long fa = 1, k; → 3
fa *= k; → 4

1. 1, 2, 3, 4
2. 3, 1, 4, 2
3. 3, 1, 2, 4
4. 1, 3, 2, 4

Write the Java expression to find the product of square root of P and the square root of Q using the methods of Math class.

Write the Java statement for creating an object named 'sifra' of the class 'Robot', which takes three double parameters.

Convert the given loop into exit-controlled loop.

int a, b;
for(a = 10, b = 1; a >= 1; a -= 2){
b += a;
b++;
}
System.out.print(b);