## Main.PythonQuiz7 History

June 23, 2021, at 08:17 PM by 145.34.0.194 -
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->'''B.''' 61
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June 23, 2021, at 08:14 PM by 145.34.0.194 -
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-->%blue%Correct.%% This formula would work but takes longer than a simpler one.
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-->%blue%Correct.%% This formula would work but takes longer to write than a simpler one.
June 23, 2021, at 08:13 PM by 145.34.0.194 -
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-->%blue%Correct.%% '!' Has a purpose in python so it can't be used in a variable name.
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-->%red%Incorrect.%% '!' Has a purpose in python so it can't be used in a variable name.
May 20, 2021, at 05:15 PM by 10.37.30.151 -
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print(x)
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print(x)
May 20, 2021, at 05:13 PM by 10.37.30.151 -
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May 20, 2021, at 04:05 PM by 10.37.30.151 -
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(:title Quiz: Intro to Python:)
(:keywords quiz, test, Python, variable, expression, introduction, course:)
(:description Learning assessment on Introduction to Python with variables and expressions.:)

----

'''1.''' Which of the following is a correct way to name a variable and set its value to 5 in python? There may be more than one correct answer.

->'''A.''' my_var = 5

-->(:toggle hide q1a button show="Select":)
(:div id=q1a:)
-->%blue%Correct.%%  This is an acceptable variable name.
(:divend:)

->'''B.''' my var = 5

-->(:toggle hide q1b button show="Select":)
(:div id=q1b:)
-->%red%Incorrect.%%  Variable names cannot contain spaces.
(:divend:)

->'''C.''' myvar = 5

-->(:toggle hide q1c button show="Select":)
(:div id=q1c:)
-->%blue%Correct.%%  This is an acceptable variable name.
(:divend:)

->'''D.''' 5 = my_var

-->(:toggle hide q1a button show="Select":)
(:div id=q1a:)
-->%red%Incorrect.%%  The variable name should be on the left with the assigned value on the right.
(:divend:)

->'''E.''' myvar: = 5

-->(:toggle hide q1b button show="Select":)
(:div id=q1b:)
-->%red%Incorrect.%% ':' Has a purpose in python so it can't be used in a variable name.
(:divend:)

->'''F.''' myvar! = 5

-->(:toggle hide q1c button show="Select":)
(:div id=q1c:)
-->%blue%Correct.%% '!' Has a purpose in python so it can't be used in a variable name.
(:divend:)

----

'''2.''' What is wrong with this 'if' statement that will keep it from working?

(:source lang=python:)
if y > 3
print(x)
(:sourceend:)

->'''A.''' Incorrect symbol used for 'greater than'

-->(:toggle hide q1a button show="Select":)
(:div id=q1a:)
-->%red%Incorrect.%%  It is actually the correct symbol for 'greater than'.
(:divend:)

->'''B.''' Incorrect 'if' statement syntax

-->(:toggle hide q1b button show="Select":)
(:div id=q1b:)
-->%blue%Correct.%%  There is a missing indentation and colon.
(:divend:)

->'''C.''' Incorrect order of 3 and y in the if statement

-->(:toggle hide q1c button show="Select":)
(:div id=q1c:)
-->%red%Incorrect.%%  They are in the correct order as shown
(:divend:)

----

'''3.''' Which is the simplest correct way to program the following equation in python?

{$y = 5x^4 + 2x^3 + 14x^2 + 3x + 7$}

->'''A.''' y = 5x4 + 2x3 + 14x2 + 3x + 7

-->(:toggle hide q1a button show="Select":)
(:div id=q1a:)
-->%red%Incorrect.%%  You will need to use the multiplication symbol in python as well as a symbol that will make an exponent.
(:divend:)

->'''B.''' y = 5x^4 + 2x^3 + 14x^2 + 3x + 7

-->(:toggle hide q1b button show="Select":)
(:div id=q1b:)
-->%red%Incorrect.%%  You will need to use a multiplication symbol and the correct symbol for creating an exponent.
(:divend:)

->'''C.''' y = 5*x^4 + 2*x^3 + 14*x^2 + 3*x + 7

-->(:toggle hide q1c button show="Select":)
(:div id=q1c:)
-->%red%Incorrect.%%  The correct symbol for making an exponent is **, not ^.
(:divend:)

->'''D.''' 5 = y = 5*x**4 + 2*x**3 + 14*x**2 + 3*x + 7

-->(:toggle hide q1a button show="Select":)
(:div id=q1a:)
-->%blue%Correct.%%  The variable name should be on the left with the assigned value on the right.
(:divend:)

->'''E.''' y = 5*x*x*x*x + 2*x*x*x + 14*x*x + 3*x + 7

-->(:toggle hide q1b button show="Select":)
(:div id=q1b:)
-->%blue%Correct.%% This formula would work but takes longer than a simpler one.
(:divend:)

----

'''4.''' What is the final value of z?

(:source lang=python:)
x = 3.897
y = 4.125
w = 8.796
z = x**2 + 3*y**3 + 2*w
z = z/z
(:sourceend:)

->'''A.''' 243.347

-->(:toggle hide q1a button show="Select":)
(:div id=q1a:)
-->%red%Incorrect.%%
(:divend:)

->'''B.''' 1

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-->%blue%Correct.%%
(:divend:)

->'''C.''' 0

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(:div id=q1c:)
-->%red%Incorrect.%%
(:divend:)

----

'''5.''' What is the final value of x?

(:source lang=python:)
y = 2
x = 3
#x = 4
z = 55
#y = 3
x = z + x + y
(:sourceend:)

->'''A.''' 60

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(:div id=q1a:)
-->%blue%Correct.%%
(:divend:)

->'''B.''' 61

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-->%red%Incorrect.%%
(:divend:)

->'''C.''' 62

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(:div id=q1c:)
-->%red%Incorrect.%%
(:divend:)

->'''D.''' 63

-->(:toggle hide q1c button show="Select":)
(:div id=q1c:)
-->%red%Incorrect.%%
(:divend:)