Which of the following statements is true for nextDouble( )?

1. It accepts an integer type value
2. It accepts a double type value
3. It accepts a float type value
4. It accepts a long type value

Which of the following does not find the square of a number?

1. Math.pow(a,2)
2. a*a
3. Math.sqrt(a,2)
4. a**2

Which of the following functions will find the square root of a number 'a'?

1. sqrt(a)
2. Math.sqrt(a)
3. Squareroot(a)
4. √a

Which of the following package will you import to use Scanner class?

1. java_util;
2. Scanner.class;
3. java.util;
4. java.scanner.util;