310+ Problem Solving and Python Programming Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Computer Science Engineering (CSE) , Information Technology Engineering (IT) , Electrical Engineering , Civil Engineering , Mechanical Engineering .

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51.	Which one of the following has the highest precedence in the expression?
A.	exponential
B.	addition
C.	multiplication
D.	parentheses
Answer» D. parentheses
Explanation: just remember: pemdas, that is, parenthesis, exponentiation, division, multiplication, addition, subtraction. note that the precedence order of division and multiplication is the same. likewise, the order of addition and subtraction is also the same.

52.	Which of these in not a core data type?
A.	lists
B.	dictionary
C.	tuples
D.	class
Answer» D. class
Explanation: class is a user defined data type.

53.	Given a function that does not return any value, What value is thrown by default when executed in shell.
A.	int
B.	bool
C.	void
D.	none
Answer» D. none
Explanation: python shell throws a nonetype object back.

54.	Which of the following will run without errors?
A.	round(45.8)
B.	round(6352.898,2,5)
C.	round()
D.	round(7463.123,2,1)
Answer» A. round(45.8)
Explanation: execute help(round) in the shell to get details of the parameters that are passed into the round function.

55.	What is the return type of function id?
A.	int
B.	float
C.	bool
D.	dict
Answer» A. int
Explanation: execute help(id) to find out details in python shell.id returns a integer value that is unique.

56.	In python we do not specify types, it is directly interpreted by the compiler, so consider the following operation to be performed. >>>x = 13 ? 2 objective is to make sure x has a integer value, select all that apply (python 3.xx)
A.	x = 13 // 2
B.	x = int(13 / 2)
C.	x = 13 % 2
D.	all of the mentioned
Answer» D. all of the mentioned
Explanation: // is integer operation in python

57.	what will be the output of the following Python code snippet? def example(a): a = a + '2' a = a*2 return a >>>example("hello")
A.	indentation error
B.	cannot perform mathematical operation on strings
C.	hello2
D.	hello2hello2
Answer» A. indentation error
Explanation: python codes have to be indented properly.

58.	What data type is the object below? L = [1, 23, 'hello', 1]
A.	list
B.	dictionary
C.	array
D.	tuple
Answer» A. list
Explanation: list data type can store any

59.	In order to store values in terms of key and value we use what core data type.
A.	list
B.	tuple
C.	class
D.	dictionary
Answer» D. dictionary
Explanation: dictionary stores values in terms of keys and values.

60.	Which of the following results in a SyntaxError?
A.	‘”once upon a time…”, she said.’
B.	“he said, ‘yes!\”
C.	‘3\\’
D.	”’that’s okay”’
Answer» C. ‘3\\’
Explanation: carefully look at the colons.

61.	What is the average value of the following Python code snippet? >>>grade1 = 80 >>>grade2 = 90 >>>average = (grade1 + grade2) / 2
A.	85.0
B.	85.1
C.	95.0
D.	95.1
Answer» A. 85.0
Explanation: cause a decimal value of 0 to appear as output.

63.	What is the output of print 0.1 + 0.2 == 0.3?
A.	true
B.	false
C.	machine dependent
D.	error
Answer» B. false
Explanation: neither of 0.1, 0.2 and 0.3 can be represented accurately in binary. the round off errors from 0.1 and 0.2 accumulate and hence there is a difference of 5.5511e-17 between (0.1 + 0.2) and 0.3.

64.	Which of the following is not a complex number?
A.	k = 2 + 3j
B.	k = complex(2, 3)
C.	k = 2 + 3l
D.	k = 2 + 3j
Answer» C. k = 2 + 3l
Explanation: l (or l) stands for long.

65.	What is the type of inf?
A.	boolean
B.	integer
C.	float
D.	complex
Answer» C. float
Explanation: infinity is a special case of floating point numbers. it can be obtained by float(‘inf’).

66.	What does ~4 evaluate to?
A.	-5
B.	-4
C.	-3
D.	+3
Answer» A. -5
Explanation: ~x is equivalent to -(x+1).

62.	What is the return value of trunc()?
A.	int
B.	bool
C.	float
D.	none
Answer» A. int
Explanation: execute help(math.trunc) to get details.

67.	What is the result of cmp(3, 1)?
A.	1
B.	0
C.	true
D.	false
Answer» A. 1
Explanation: cmp(x, y) returns 1 if x > y, 0 if x == y and -1 if x < y.

68.	Which of the following is incorrect?
A.	float(‘inf’)
B.	float(‘nan’)
C.	float(’56’+’78’)
D.	float(’12+34′)
Answer» D. float(’12+34′)
Explanation: ‘+’ cannot be converted to a float.

69.	What is the result of round(0.5) – round(-0.5)?
A.	1.0
B.	2.0
C.	0.0
D.	value depends on python version
Answer» D. value depends on python version
Explanation: the behavior of the round()

70.	What does 3 ^ 4 evaluate to?
A.	81
B.	12
C.	0.75
D.	7
Answer» D. 7
Explanation: ^ is the binary xor operator.

71.	The value of the expressions 4/(3(2-1)) and 4/3(2-1) is the same.
A.	true
B.	false
Answer» A. true
Explanation: although the presence of parenthesis does affect the order of precedence, in the case shown above, it is not making a difference. the result of both of these expressions is 1.333333333. hence the statement is true.

72.	What will be the value of the following Python expression? 4 + 3 % 5
A.	4
B.	7
C.	2
D.	0
Answer» B. 7
Explanation: the order of precedence is: %,+. Hence the expression above, on simplification results in 4 + 3 = 7. Hence the result is 7.

73.	Which of the following operators has its associativity from right to left?
A.	+
B.	//
C.	%
D.	**
Answer» D. **
Explanation: all of the operators shown above have associativity from left to right, except exponentiation operator (**) which has its associativity from right to left.

74.	What will be the value of x in the following Python expression? x = int(43.55+2/2)
A.	43
B.	44
C.	22
D.	23
Answer» B. 44
Explanation: The expression shown above is an example of explicit conversion. It is evaluated as int(43.55+1) = int(44.55) = 44. Hence the result of this expression is 44.

75.	What is the value of the following expression? 2+4.00, 2**4.0
A.	(6.0, 16.0)
B.	(6.00, 16.00)
C.	(6, 16)
D.	(6.00, 16.0)
Answer» A. (6.0, 16.0)
Explanation: the result of the expression shown above is (6.0, 16.0). this is because the result is automatically rounded off to one decimal place.

310+ Problem Solving and Python Programming Solved MCQs

Which one of the following has the highest precedence in the expression?

Which of these in not a core data type?

Given a function that does not return any value, What value is thrown by default when executed in shell.

Which of the following will run without errors?

What is the return type of function id?

In python we do not specify types, it is directly interpreted by the compiler, so consider the following operation to be performed. >>>x = 13 ? 2 objective is to make sure x has a integer value, select all that apply (python 3.xx)

what will be the output of the following Python code snippet? def example(a): a = a + '2' a = a*2 return a >>>example("hello")

What data type is the object below? L = [1, 23, 'hello', 1]

In order to store values in terms of key and value we use what core data type.

Which of the following results in a SyntaxError?

What is the average value of the following Python code snippet? >>>grade1 = 80 >>>grade2 = 90 >>>average = (grade1 + grade2) / 2

What is the return value of trunc()?

What is the output of print 0.1 + 0.2 == 0.3?

Which of the following is not a complex number?

What is the type of inf?

What does ~4 evaluate to?

What is the result of cmp(3, 1)?

Which of the following is incorrect?

What is the result of round(0.5) – round(-0.5)?

What does 3 ^ 4 evaluate to?

The value of the expressions 4/(3*(2-1)) and 4/3*(2-1) is the same.

What will be the value of the following Python expression? 4 + 3 % 5

Which of the following operators has its associativity from right to left?

What will be the value of x in the following Python expression? x = int(43.55+2/2)

What is the value of the following expression? 2+4.00, 2**4.0

Which of the following is the truncation division operator?

What are the values of the following Python expressions? 2**(3**2) (2**3)**2 2**3**2

What is the value of the following expression? 8/4/2, 8/(4/2)

What will be the value of X in the following Python expression? X = 2+9*((3*12)-8)/10

What will be the output of the following Python expression? 24//6%3, 24//4//2

What will be the value of the following Python expression? float(4+int(2.39)%2)

What will be the value of the following Python expression? 4+2**5//10

The expression 2**2**3 is evaluates as: (2**2)**3.

What will be the output of the following Python expression? int(1011)?

Which of the following expressions results in an error?

Which of the following represents the bitwise XOR operator?

What is the value of the following Python expression? bin(0x8)

What will be the output of the following Python expression? 0x35 | 0x75

It is not possible for the two’s complement value to be equal to the original value in any case.

Bitwise gives 1 if either of the bits is 1 and 0 when both of the bits are 1.

What will be the output of the following Python expression? 4^12

Which of the following expressions can be used to multiply a given number ‘a’ by 4?

R operator. Hence the output of the code shown above is: 20 10.

What will be the output of the following Python code snippet? not(10<20) and not(10>30)

What will be the output of the following Python code? for i in range(0): print(i)

What will be the output of the following Python code? for i in range(2.0): print(i)

What will be the output of the following Python code? for i in range(int(2.0)): print(i)

What will be the output of the following Python code snippet? a = [0, 1, 2, 3] for a[0] in a: print(a[0])

What will be the output of the following Python statement? >>>"a"+"bc"

What will be the output of the following Python statement? >>>"abcd"[2:]

In python we do not specify types, it is
directly interpreted by the compiler, so
consider the following operation to be
performed.
>>>x = 13 ? 2
objective is to make sure x has a integer
value, select all that apply (python 3.xx)

what will be the output of the following
Python code snippet?
def example(a):
a = a + '2'
a = a*2
return a
>>>example("hello")

What is the average value of the
following Python code snippet?
>>>grade1 = 80
>>>grade2 = 90
>>>average = (grade1 + grade2) / 2

The value of the expressions 4/(3(2-1)) and 4/3(2-1) is the same.

What will be the value of x in the
following Python expression?
x = int(43.55+2/2)

What are the values of the following
Python expressions?
2(32)
(23)2
232

What will be the value of X in the
following Python expression?
X = 2+9((312)-8)/10

What will be the output of the following
Python expression?
24//6%3, 24//4//2

What will be the value of the following
Python expression?
float(4+int(2.39)%2)

What will be the value of the following
Python expression?
4+2**5//10

The expression 223 is evaluates as: (22)3.

What will be the output of the following
Python expression?
4^12

What will be the output of the following
Python code snippet?
not(10<20) and not(10>30)

What will be the output of the following
Python code?
for i in range(0):
print(i)

What will be the output of the following
Python code?
for i in range(2.0):
print(i)

What will be the output of the following
Python code?
for i in range(int(2.0)):
print(i)

What will be the output of the following
Python code snippet?
a = [0, 1, 2, 3]
for a[0] in a:
print(a[0])

What will be the output of the following
Python statement?
>>>"a"+"bc"

What will be the output of the following
Python statement?
>>>"abcd"[2:]

76.	Which of the following is the truncation division operator?
A.	/
B.	%
C.	//
Answer» C. //
Explanation: // is the operator for truncation division. it is called so because it returns only the integer part of the quotient, truncating the decimal part. for example: 20//3 = 6.

77.	What are the values of the following Python expressions? 2(32) (23)2 232
A.	64, 512, 64
B.	64, 64, 64
C.	512, 512, 512
D.	512, 64, 512
Answer» D. 512, 64, 512
Explanation: Expression 1 is evaluated as: 29, which is equal to 512. Expression 2 is evaluated as 82, which is equal to 64. The last expression is evaluated as 2(32). This is because the associativity of ** operator is from right to left. Hence the result of the third expression is 512.

78.	What is the value of the following expression? 8/4/2, 8/(4/2)
A.	(1.0, 4.0)
B.	(1.0, 1.0)
C.	(4.0. 1.0)
D.	(4.0, 4.0)
Answer» A. (1.0, 4.0)
Explanation: the above expressions are evaluated as: 2/2, 8/2, which is equal to (1.0, 4.0).

79.	What will be the value of X in the following Python expression? X = 2+9((312)-8)/10
A.	30.0
B.	30.8
C.	28.4
D.	27.2
Answer» D. 27.2
Explanation: The expression shown above is evaluated as: 2+9(36-8)/10, which simplifies to give 2+9(2.8), which is equal to 2+25.2 =27.2. Hence the result of this expression is 27.2.

80.	What will be the output of the following Python expression? 24//6%3, 24//4//2
A.	(1,3)
B.	(0,3)
C.	(1,0)
D.	(3,1)
Answer» A. (1,3)
Explanation: the expressions are evaluated as: 4%3 and 6//2 respectively. this results in the answer (1,3). this is because the associativity of both of the expressions shown above is left to right.

81.	What will be the value of the following Python expression? float(4+int(2.39)%2)
A.	5.0
B.	5
C.	4.0
D.	4
Answer» C. 4.0
Explanation: the above expression is an example of explicit conversion. it is evaluated as: float(4+int(2.39)%2) = float(4+2%2) = float(4+0) = 4.0. hence the result of this expression is 4.0.

84.	What will be the output of the following Python expression? int(1011)?
A.	1011
B.	11
C.	13
D.	1101
Answer» A. 1011
Explanation: the result of the expression shown will be 1011. this is because we have not specified the base in this expression.

85.	Which of the following expressions results in an error?
A.	int(1011)
B.	int(‘1011’,23)
C.	int(1011,2)
D.	int(‘1011’)
Answer» C. int(1011,2)
Explanation: the expression int(1011,2) results in an error. had we written this expression as int(‘1011’,2), then there would not be an error.

86.	Which of the following represents the bitwise XOR operator?
A.	&
B.	^
D.	!
Answer» B. ^
Explanation: the ^ operator represent bitwise xor operation. &: bitwise and,

87.	What is the value of the following Python expression? bin(0x8)
A.	‘0bx1000’
B.	8
C.	1000
D.	‘0b1000’
Answer» D. ‘0b1000’
Explanation: the prefix 0x specifies that the value is hexadecimal in nature. when we convert this hexadecimal value to binary form, we get the result as: ‘0b1000’.