Podcast
Questions and Answers
What is the output range of the Math.random() method?
What is the output range of the Math.random() method?
- 0.1 to 1.0
- 0 to 1.0
- 0 to 0.99 (correct)
- 1.0 to 2.0
What would be the result of Math.ceil(1.5)?
What would be the result of Math.ceil(1.5)?
- 1
- 3
- 1.5
- 2 (correct)
If you multiply the result of Math.random() by 10, what is the potential range of output values?
If you multiply the result of Math.random() by 10, what is the potential range of output values?
- 1 to 10
- 0.1 to 9.9
- 0 to 10
- 0 to 9.9 (correct)
What does the Math.ceil(2.99) return?
What does the Math.ceil(2.99) return?
Which of the following statements about Math.ceil() is correct?
Which of the following statements about Math.ceil() is correct?
Flashcards
Math.random() output
Math.random() output
Generates decimal numbers between 0 (inclusive) and 1 (exclusive).
Math.random() range
Math.random() range
The default range is 0 to 0.99; can be extended by multiplying by a number.
Math.ceil() function
Math.ceil() function
Rounds a decimal number up to the nearest whole number.
Math.ceil(0.0001)
Math.ceil(0.0001)
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Math.ceil(1.5)
Math.ceil(1.5)
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Study Notes
Math.random() Method
- Generates a decimal number between 0 (inclusive) and 1 (exclusive).
- The result is a floating-point number.
- Can be stored in a variable for later use.
Expanding the Range
- Multiplying the result by a number (e.g., 10) increases the output range.
Math.ceil() Method
- Rounds a decimal number up to the nearest integer.
- Always rounds up, regardless of the decimal portion.
- Example:
Math.ceil(0.0001)returns1. - Example:
Math.ceil(1.5)returns2. - Example:
Math.ceil(2.99)returns3.
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