Which of the following is an illegal identifier?

1. age
2. 123abc
3. _value
4. $\text{\textdollar}$salary

Which of the following is/are jump statement used in Java?

1. break
2. continue
3. return
4. All of these

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