Object that share the same attributes and behaviour are grouped together into a/an

1. interface
2. instance
3. alias
4. class

The statement (1 > 0) || (1 < 0) evaluates to

1. 0
2. 1
3. false
4. true

Give the output of Math.sqrt(x); when x = 9.0.

1. 3
2. 3.0
3. 3.00
4. All of these

What will be the output of the following code?

String a[] = {"MI", "Samsung", "Micromax", "One Plus"};
System.out.println(a[3].length());

1. 8
2. 7
3. 5
4. 9