1 questions to solve.

Instructions
1. This quiz goes to full-screen once you press the Start button.
2. At the end of the quiz, you are able to review all the questions that you answered wrong and see their explanations.
What does `round(3.78, 1)` return?
`round(3.78, 1)` rounds `3.78` to the nearest tenths place yielding `3.8`.

The correct choice is therefore (B). Refer to PHP Rounding Numbers for more information.
What does `round(378.52)` return?
`round(378.52)` rounds `378.52` to the nearest units to give `379.0`, which goes with choice (C). Refer to PHP Rounding Numbers for more information.
What does `round(168.83, -1)` return?
`round(168.83, -1)` rounds `168.83` to the nearest tens to give `170.0`, which goes with choice (D). Refer to PHP Rounding Numbers for more information.
What does `floor(10.9)` return?
The `floor()` function returns the floor of a given number as a floating-point value. Hence, `floor(10.9)` returns `10.0`, NOT `10`. Refer to PHP Rounding Numbers — Floor and ceil for more information.
What does `ceil(9.03)` return?
The `ceil()` function returns the ceil of a given number as a floating-point value. Hence, `ceil(9.03)` returns `10.0`, NOT `10`. Refer to PHP Rounding Numbers — Floor and ceil for more information.
What does `round(3.5, 3)` return?
By definition, `round(3.5, 3)` rounds `3.5` to 3 decimal places, but since it's not possible to add ending zeroes to the number, the result remains what it is i.e `3.5`. Hence, the correct choice is (A). Refer to PHP Rounding Numbers for more information.