Operations like square root, sine and cosine are

1. impure functions
2. pure functions
3. static functions
4. class functions

Given array int x[ ] = {11, 22, 33, 44}; the value of x[1 + 2] is :

1. 11
2. 22
3. 33
4. 44

Method that converts a character to uppercase is

1. toUpper()
2. ToUpperCase()
3. TOUPPERCASE()
4. toUpperCase(char)

Give the output of the following code

System.out.println("Good".concat("Day"));

1. GoodDay
2. Good Day
3. Goodday
4. goodDay