### PROBLEM LINK:

**Author:** Akshat Jain

**Tester:** Ankit Kathuria

**Editorialist:** Akshat Jain

### DIFFICULTY:

EASY-MEDIUM

### PREREQUISITES:

Interest in Coding, Arrays, setprecision, Root Mean Square.

### PROBLEM:

Finding the problem is the first task based on the input, output format and exe file provided. Then think the logic and code the same.

### QUICK EXPLANATION:

The task in this problem is to find the root mean square of the list of values provided.

### EXPLANATION:

• The first input is the number of test cases.

• Then the array is to be inputted and root mean square value is to be found.

• This can be done by first squaring all the values available, adding them and calculating the square root of the sum.

• Finally the answer is to be displayed correct upto 2 decimal places (using functions like setprecision in c++).

### AUTHOR’S AND TESTER’S SOLUTIONS:

Author’s solution can be found here.

Tester’s solution can be found here.