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**Here is list of Questions and Answers covering all key area of Java.lang – Rounding Functions topic of Java Programming:**

1. Which of these class contains only floating point functions?

**Answer:** Option
A

**Explanation:**

Math class contains all the floating point functions that are used for geometry, trigonometry, as well as several general purpose methods. Example : sin(), cos(), exp(), sqrt() etc.

2. Which of these method is a rounding function of Math class?

**Answer:** Option
D

**Explanation:**

rint() rounds up a variable to nearest integer.

3. Which of these method return a largest whole number less than or equal to variable X?

**Answer:** Option
B

**Explanation:**

double floor(double X) returns a largest whole number less than or equal to variable X.

4. Which of function return absolute value of a variable?

**Answer:** Option
A

**Explanation:**

abs() returns the absolute value of a variable.

5. Which of these class provides various types of rounding functions?