Question

If someNumber is a short variable with a value of -25, which one of the answers below is true of attempting to compile and execute the following statement: System.out.println("Root= " + Math.sqrt(someNumber)); 

Option:-
1. the statement will not compile
2. the statement will display "Root=NaN"
3. the statement will display "Root= 5.0"
4. the statement will display "Root= -5.0"

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Answer 1

Answer:

Option 2: the statement will display "Root=NaN"

Explanation:

The square root of negative number is not possible...Hence the control will compile but it will display Root=NaN.

Answer 2

Answer:

The statement will display "Root= NaN"

Explanation:  

As square root of a negative number cannot be determined so, Math.sqrt( ) returns NaN short for Not a Number.