This set of MCQ(multiple choice questions) focuses on the Python for Data Science NPTEL Week 1 Assignment 1 Solutions.
You should practice these questions to improve fundamentals of Data Science needed for various interviews (like company interview, campus interview, walk-in interview), entrance exams, placements and other competitive exams. All the questions in this particular section are based on only “Python for Data Science NPTEL Week 1 Assignment 1 Solutions“.
Course layout
Week 1: Basics of Python Spyder
Week 2: Sequence data types & associated operations
Week 3: Data frames
Week 4: Case study
NOTE: You can check your answer immediately by clicking show answer button. Moreover, this set of “Python for Data Science NPTEL Week 1 Assignment 1 Solution” contains 10 questions.
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Python for Data Science NPTEL Week 1 Assignment
Q1. What is the output of the following code?
a = 3
b = “12”
print(a*b)
a) 36
b) 121212
c) 123
d) Error: Invalid operation, unsupported operator ‘*’ used between ‘int’ and ‘str’
Answer: b)
Q2. What is the output of the following code?
a = -9//7
print(a)
a) -1
b) -2
c) -1.28
d) 1.28
Answer: b)
Q3. Consider a following code snippet. What is a data type of y?
x = 15
y = str(float(x))
a) int
b) float
c) str
d) Code will throw an error
Answer: c)
Q4. Which of the following variable names are INVALID in Python?
a) 1 variable
b) variable 1
c) variable1
d) variable#
Answer: a), d)
Q5. While naming the variable, use of any special character other than underscore(_) will throw which type of error?
a) Syntax error
b) Key error
c) Value error
d) Index error
Answer: a)
Q6. Let x = “Mayur”. Which of the following commands converts the ‘x’ to float datatype?
a) str(float.x)
b) x.float(x)
c) float(x)
d) Cannot convert a string to float data type
Answer: d)
Q7. Which Python library is commonly used for data wrangling and manipulation?
a) Numpy
b) Pandas
c) scikit
d) Math
Answer: b)
Q8. Predict the output of the following code.
x = 10
y = 5
z = 3
ans = X + y % z
print(ans)
a) 12.0
b) 12
c) 11.667
d) 11
Answer: b)
Q9. Given two variables, j = 6 and g = 3.3. If both normal division and floor division operators were used to divide j by g, what would be the data type of the value obtained from the operations?
a) int, int
b) float, float
c) float, int
d) int, float
Answer: b)
Q10. Let a = 5 (101 in binary) and b = 3 (011 in binary). What is the result of the following operation?
a = 5
b = 3
print(a & b)
a) 3
b) 7
c) 5
d) 1
Answer: d)
Python for Data Science NPTEL Week 1 Assignment 1 Solutions
Q1. Which of the arithmetic operations given below cannot be used with ‘strings’ in Python?
a) *
b) –
c) +
d) All of the above
Answer: b) –
Q2. When the following statement is executed, what type of error is obtained?
var@check1 = 10
a) Type Error
b) Syntax Error
c) Value Error
d) None of the above
Answer: b) Syntax Error
Q3. Two variables X and Y were assigned the following values initially. X = 3 and Y = 6. Which of the following statements will help swap the values between these two variables?
a) Y = X, X = Y
b) X = Y
c) X = Y, Y = X
d) X, Y = Y, X
Answer: d) X, Y = Y, X
Q4. From the following set of statements, what will be the value of variable y in the final print statement?
y = 1**2**3**2
print(“Variable y:”, y)
a) 8
b) 9
c) 1
d) Error
e) 16
Answer: c) 1
Q5. Consider j = 5 and k = 11. We change the values from j = 7 and k remains constant.
What is print(j|k) before and after modification of value in variable j?
a) 3, 15
b) 15, 15
c) 11, 15
d) 15, 7
e) None of the above
Answer: b) 15, 15
Q6. What would be the output of the following statements?
log_exp = not not True and False or not False
print(log_exp)
a) False
b) True
c) Not True
d) None of the above
Answer: b) True
Q7. What does k = 4%7 evaluate to and what is the type of variable k?
a) 4, int
b) 0.0, float
c) 0, int
d) 1, int
e) None of the above
Answer: a) 4, int
Q8. j = 6 and g = 3.3. If normal division and floor division was done between j and k, what would be the type of the resultant variable?
a) int ,int
b) float, float
c) float, int
d) int, float
e) None of the above
Answer: b) float, float
Q9. Consider two answers to a question; answer1 and answer2. What is the output of the following set of statements?
answer1 = True
answer2 = False
print(answer1 * answer2)
a) True
b) False
c) 0
d) 1
Answer: c) 0
Q10. Consider the list of instructions and resulting outputs given below. Pick the set that is incorrect.
1. print("Good", end = "")
print("Day")
Output -> GoodDay
2. word1 = "Trial"
print("Word is %s" %word1)
Output -> Trial
3. num1 = 23
print(" Number: %f" %num1)
Output -> Number: 23.000000
4. print("ready\nsteady\ngo")
Output -> ready
steady
goa) 4
b) 2
c) 1, 3, 4
d) 3, 4
e) All are correct
Answer: b) 2
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