## Are you ready?

**1** questions to solve.

Instructions

- This quiz goes to full-screen once you press the Start button, or any Next button after exiting the quiz window.
- 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?When called with a positive second argument

The correct choice is therefore (B). For more details, refer to Python Rounding Numbers — the

*,*`n`

`round()`

rounds the given number to the digit in the *th position*`n`

**to the right**of the units digit. Likewise,`round(3.78, 1)`

rounds `3.78`

to the `1`

st digit after `3`

, which is the digit `7`

, yielding `3.8`

.The correct choice is therefore (B). For more details, refer to Python Rounding Numbers — the

`round()`

function.What does

`round(378.52)`

return?When called without a second argument,

`round()`

rounds the given number to the nearest units. In this case, `round(378.52)`

rounds `378.52`

to `379.0`

, which goes with choice (C). For more details, refer to Python Rounding Numbers — the `round()`

function.What does

`round(168.83, -1)`

return?When called with a negative second argument

The correct choice is therefore (D). For more details, refer to Python Rounding Numbers — the

*,*`n`

`round()`

rounds the given number to the digit in the *th position*`n`

**to the left**of the units digit. This means that`round(168.83, -1)`

rounds `168.83`

to the `1`

st digit before `8`

, which is the digit `6`

, yielding `170.0`

.The correct choice is therefore (D). For more details, refer to Python Rounding Numbers — the

`round()`

function.What does

`trunc(3.9)`

return?The

`trunc()`

function removes the fractional part from a given number and returns back the left off integer. Thus `trunc(3.9)`

returns `3`

, which goes with choice (B). For more details, refer to Python Rounding Numbers — truncation.What does

`floor(10.9)`

return?The

`floor()`

function returns the floor of a given number i.e the largest integer smaller than or equal to the number. Hence, `floor(10.9)`

returns `10`

. For more details, refer to Python Rounding Numbers — floor and ceil.What does

`ceil(9.03)`

return?The

`ceil()`

function returns the ceil of a given number i.e the smallest integer greater than or equal to the number. Hence, `ceil(9.03)`

returns `10`

. For more details, refer to Python Rounding Numbers — floor and ceil.`floor()`

and `trunc()`

return the same result on positive numbers. True or false?On positive numbers,

`floor()`

and `trunc()`

return the same result. Hence, the statement above is indeed true.`ceil()`

and `trunc()`

return the same result on positive numbers. True or false?Only on negative numbers, do the

`ceil()`

and `trunc()`

functions return the same result; NOT on positive numbers. Hence, the statement above is false.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). For more details, refer to Python Rounding Numbers — the `round()`

function.What does

`'{:.3f}'.format(70.8)`

return?To see how the

`format()`

string method works, refer to Python Rounding Numbers — rounding in strings.What does

`'{:.4f}'.format(10.93578)`

return?To see how the

`format()`

string method works, refer to Python Rounding Numbers — rounding in strings.