Java Random Number Generation Quiz

What method is used in Java to generate a random number between 0.0 (inclusive) and 1.0 (exclusive)?

• Math.randomInt()

• Random.nextInt()

• Random.generate()

• Math.random()

Which of the following formulas can be used to generate a random integer between 0 and 100 in Java?

• int randomNum = (int)(Math.random() * 101);

• int randomNum = (int)(Math.random() * 100);

• int randomNum = Math.random() * 100;

• int randomNum = Random.nextInt(100);

What is the return type of the Math.random() method in Java?

• int

• double

• float

• long

What is the range of values returned by Math.random() in Java?

• 0.0 (inclusive) to 1.0 (exclusive)

• 0.0 (exclusive) to 1.0 (exclusive)

• 0.0 (inclusive) to 1.0 (inclusive)

• 0.0 (exclusive) to 1.0 (inclusive)

To generate a random integer between 1 and 10, which of the following expressions is correct?

• int randomNum = (int)(Math.random() * 10) + 1;

• int randomNum = Math.random() * 10 + 1;

• int randomNum = (int)(Math.random() * 11);

• int randomNum = Random.nextInt(10) + 1;

What is the purpose of casting in the expression (int)(Math.random() * 101)?

• To generate a floating-point number

• To ensure the result is always positive

• To increase the range of random numbers

• To convert the double result to an integer

Which of the following is a correct way to generate a random number between 0 and 50?

• int randomNum = (int)(Math.random() * 50);

• int randomNum = Math.random() * 50;

• int randomNum = (int)(Math.random() * 51);

• int randomNum = Random.nextInt(50);

What is the output type of the expression (int)(Math.random() * 101)?

• int

• double

• float

• long

What is the primary use of the Math.random() method in Java?

• To handle exceptions

• To generate random numbers

• To perform mathematical calculations

• To convert data types

Which of the following is a valid use of Math.random() to generate a random number between 0 and 200?

• int randomNum = Random.nextInt(200);

• int randomNum = (int)(Math.random() * 200);

• int randomNum = Math.random() * 200;

• int randomNum = (int)(Math.random() * 201);