Mathematical Library Methods in Java Quiz

Which Java package includes the Math class?

• java.sys

• java.util

• java.lang

• java.io

Give the output of Math.sqrt(x); when x = 9.

• 2.0

• 3.0

• 3.00

• All of these

Give the output of Math.ceil(46.6).

• 46.0

• 47.0

• 46.5

• 46.6

What will be the output of Math.pow(2, 0)?

• 1.0

• 0.0

• 2.0

• -1.0

Math.random() returns a double value r such that

• 0.0 <= r < 1.0

• 0.0 < r <= 1.0

• 0.0 <= r <= 1.0

• 0.0 < r < 1.0

Which of the following is a method to find the square root of a number?

• FindSquareroot(x)

• Math.sqrt(x)

• Sqrt(x)

• Math.Square(x)

Give the output of Math.floor(46.6)?

• 46.5

• 46.0

• 47.0

• -46.0

Explain the function Math.round() in Java.

• Rounds off its argument to the nearest integer

• Returns the square root of its argument

• Returns the cube root of its argument

• Generates a random number

What does Math.abs(x) return when x = -9.99?

• -9.99

• None of these

• 9.99

• 0.99

What is the output of Math.cbrt(27)?

• 3.0

• 2.0

• 4.0

• 1.0