Quiz 05 - Math in Java

Which symbols is used to find the remainder when dividing two numbers?

• *

• /

• %

• #

What is the result of evaluating the expression "29 % 6"?

• 4

• 5

• 1

• 0

Which is NOT a valid Java expression?

• base * height / 2

• (base)(height) / 2

• (base * height) / 2

• base * (height / 2)

What is the result of this Java math expression:

4 + 12 / 5

• 6

• 3

• 6.4

• 3.2

Which Math class method can be used to calculate square roots?

• Math.sqrt()

• Math.root()

• Math.squareroot()

• Math.squirt()

Which Math class method can be used to calculate exponents?

• Math.exponent()

• Math.raise()

• Math.pow()

• Math.ceil()

Which Math class method will round any number down (towards negative infinity)?

• Math.round()

• Math.floor()

• Math.ceil()

• Math.roundDown()

You want to divide "total" by 5 and get a decimal number. Which of the following will NOT work correctly?

• double each = total / 5;

• double each = (double) total / 5;

• double each = total / (double) 5;

• double each = total / 5.0;

Java does NOT follow BEDMAS

• True

• False

When you try to square root a negative number in Java, what happens?

• It returns the value NaN

• It raises an error

• It returns the value undefined

• It returns an imaginary number