The correct statement to create an object named mango of class fruit:

1. Fruit Mango= new fruit();
2. fruit mango = new fruit();
3. Mango fruit=new Mango();
4. fruit mango= new mango();

Assertion (A): Static method can access static and instance variables.

Reason (R): Static variable can be accessed only by static method.

1. Assertion and Reason both are correct.
2. Assertion is true and Reason is false.
3. Assertion is false and Reason is true.
4. Assertion and Reason both are false.

Which of the following mathematical methods returns only an integer?

1. Math.ceil(n)
2. Math.sqrt(n)
3. Math.floor(n)
4. Math.round(n)

Write Java expression for:

$\dfrac{|𝑎 + 𝑏|}{\sqrt{a^2 + b^2}}$