chore: import upstream snapshot with attribution

curriculum/challenges/english/blocks/quiz-javascript-math/66edc3ab8c6413c344f401bf.md

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+---
+id: 66edc3ab8c6413c344f401bf
+title: JavaScript Math Quiz
+challengeType: 8
+dashedName: quiz-javascript-math
+---
+
+# --description--
+
+To pass the quiz, you must correctly answer at least 18 of the 20 questions below.
+
+# --quizzes--
+
+## --quiz--
+
+### --question--
+
+#### --text--
+
+What does `NaN` stand for?
+
+#### --distractors--
+
+`Numeric and Number`
+
+---
+
+`Not a Null`
+
+---
+
+`Null and Number`
+
+#### --answer--
+
+`Not a Number`
+
+### --question--
+
+#### --text--
+
+Which of the following is NOT an arithmetic operator in JavaScript?
+
+#### --distractors--
+
+`*`
+
+---
+
+`+`
+
+---
+
+`-`
+
+#### --answer--
+
+`??`
+
+### --question--
+
+#### --text--
+
+What happens if you try to divide by zero in JavaScript?
+
+#### --distractors--
+
+JavaScript will output 0.
+
+---
+
+Nothing will happen.
+
+---
+
+JavaScript will throw an error.
+
+#### --answer--
+
+JavaScript will output `Infinity`
+
+### --question--
+
+#### --text--
+
+Which of the following is the correct use of the exponentiation operator?
+
+#### --distractors--
+
+`2*3`
+
+---
+
+`2#3`
+
+---
+
+`2%3`
+
+#### --answer--
+
+`2**3`
+
+### --question--
+
+#### --text--
+
+Which operator should you use when decrementing a variable in JavaScript?
+
+#### --distractors--
+
+`++`
+
+---
+
+`//`
+
+---
+
+`**`
+
+#### --answer--
+
+`--`
+
+### --question--
+
+#### --text--
+
+Which of the following is NOT a bitwise operator?
+
+#### --distractors--
+
+`&`
+
+---
+
+`|`
+
+---
+
+`^`
+
+#### --answer--
+
+`>`
+
+### --question--
+
+#### --text--
+
+Which of the following is the correct compound operator for getting the remainder?
+
+#### --distractors--
+
+`//=`
+
+---
+
+`\=`
+
+---
+
+`%%=`
+
+#### --answer--
+
+`%=`
+
+### --question--
+
+#### --text--
+
+What is the difference between the `==` and `===` operators?
+
+#### --distractors--
+
+There is no difference. The comparison result will always have the same result.
+
+---
+
+The `==` operator is used to check if the data type is the same while the `===` is used to check if the value is equal.
+
+---
+
+The `==` operator can only be used with primitive types while the `===` operator is only used for objects.
+
+#### --answer--
+
+The `==` operator only compares values whereas the `===` operator compares values and types.
+
+### --question--
+
+#### --text--
+
+What is the unary plus operator (`+`) used for?
+
+#### --distractors--
+
+It is used to decrement a value by one.
+
+---
+
+It is used to get the remainder from an operation.
+
+---
+
+It is used to invert the binary representation of a number.
+
+#### --answer--
+
+It is used to convert its operand into a number.
+
+### --question--
+
+#### --text--
+
+Which of the following `Math` methods rounds a value to the nearest whole integer?
+
+#### --distractors--
+
+`Math.trunc()`
+
+---
+
+`Math.max()`
+
+---
+
+`Math.min()`
+
+#### --answer--
+
+`Math.round()`
+
+### --question--
+
+#### --text--
+
+What does the `Math.sqrt()` method do?
+
+#### --distractors--
+
+This method returns a random floating point number.
+
+---
+
+This method returns the absolute value for a number.
+
+---
+
+This method returns the cube of a number.
+
+#### --answer--
+
+This method returns the square root of a number.
+
+### --question--
+
+#### --text--
+
+Which of the following is NOT a valid method for the `Math` object?
+
+#### --distractors--
+
+`Math.ceil()`
+
+---
+
+`Math.pow()`
+
+---
+
+`Math.abs()`
+
+#### --answer--
+
+`Math.extend()`
+
+### --question--
+
+#### --text--
+
+Which of the following will return `false`?
+
+#### --distractors--
+
+`isNaN("Matt")`
+
+---
+
+`isNaN()`
+
+---
+
+`isNaN(undefined)`
+
+#### --answer--
+
+`isNaN(7)`
+
+### --question--
+
+#### --text--
+
+What does the `parseFloat()` method do?
+
+#### --distractors--
+
+It parses a string argument and performs a bitwise operation on it.
+
+---
+
+It parses a string argument and returns `false`.
+
+---
+
+It parses a string argument and returns an integer.
+
+#### --answer--
+
+It parses a string argument and returns a floating-point number.
+
+### --question--
+
+#### --text--
+
+What will be logged to the console?
+
+```js
+let num = 5;
+console.log(++num);
+```
+
+#### --distractors--
+
+`error`
+
+---
+
+`null`
+
+---
+
+`5`
+
+#### --answer--
+
+`6`
+
+### --question--
+
+#### --text--
+
+What would be the output for the following code?
+
+```js
+console.log(5 == '5');
+```
+
+#### --distractors--
+
+`undefined`
+
+---
+
+`false`
+
+---
+
+`null`
+
+#### --answer--
+
+`true`
+
+### --question--
+
+#### --text--
+
+What is operator precedence?
+
+#### --distractors--
+
+Operator precedence is used to check if the value on the left is less than the one on the right.
+
+---
+
+Operator precedence is used to raise a variable to the power of the specified number and reassigns the result to the variable.
+
+---
+
+Operator precedence is used to increase the value by one.
+
+#### --answer--
+
+Operator precedence determines the order in which operations are evaluated in an expression.
+
+### --question--
+
+#### --text--
+
+Which of the following is NOT a comparison operator?
+
+#### --distractors--
+
+`>`
+
+---
+
+`>=`
+
+---
+
+`<`
+
+#### --answer--
+
+`!>`
+
+### --question--
+
+#### --text--
+
+What does the unary negation operator (`-`) do?
+
+#### --distractors--
+
+It flips the boolean value of its operand.
+
+---
+
+It decreases the value by one.
+
+---
+
+It increases the value by one.
+
+#### --answer--
+
+It negates the operand.
+
+### --question--
+
+#### --text--
+
+Which of the following is an example of using the nullish coalescing operator?
+
+#### --distractors--
+
+```js
+const userSettings = {
+ theme: null,
+ volume: 0,
+ notifications: false,
+};
+
+userSettings.theme () 'light';
+```
+
+---
+
+```js
+const userSettings = {
+ theme: null,
+ volume: 0,
+ notifications: false,
+};
+
+userSettings.theme ** 'light';
+```
+
+---
+
+```js
+const userSettings = {
+ theme: null,
+ volume: 0,
+ notifications: false,
+};
+
+userSettings.theme \\ 'light';
+```
+
+#### --answer--
+
+```js
+const userSettings = {
+ theme: null,
+ volume: 0,
+ notifications: false,
+};
+
+userSettings.theme ?? 'light';
+```
+