What is the output of Math.ceil(5.4)+Math.ceil(4.5)?

1. 10.0
2. 11.0
3. 12.0
4. 9.0

The output of the statement Math.ceil.(89.9) + Math.floor(90.5) is:

1. 0.0
2. 180
3. 180.0
4. 180.4

The output of the following code is:

System.out.println(Math.ceil(6.4) + Math.floor(-1-2));

1. 3.0
2. 4
3. 3
4. 4.0