MCQModerate1 mark
1
Choose the correct answers to the questions from the given options. (Do not copy the questions, write only the correct answers.)
What value will Math.sqrt(Math.ceil(15.3)) return?
Topic: Nested Math methods
Previous-year question practice database
Try it
Pick an option and check your answer. The full worked answer is below either way.
Answer
Exam answer
(c) 4.0.
Explanation
Work from the inside out, exactly as with brackets in arithmetic. Math.ceil(15.3) rounds UP to the next whole number, giving 16.0. Then Math.sqrt(16.0) gives 4.0. The answer is 4.0 and not 4, because both methods return a double — that decimal point is what separates the right option from the wrong one here.
In words
4.0.
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