Class 11 IP Chapter 3 Python Fundamentals – Sumita Arora – Solutions New Syllabus

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Ex 3.1

Ex 3.2

What will varl and var2 store with statements : varl = 2,121E2 and var2 = 0.2,121E2 ? What are the types of values stored in varl and var2 ?
var1 will ...
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What kind of program elements are the following ? ‘a’, 4.38925, “a”, “main” ?
single quotes ...
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Out of the following literals, determine their type whether decimal / octal / hexadecimal integer literal or a floating point literal in fractional or exponent form or string literal or other ? 123, 0ol24, OxABC, ‘abc’, “ABC”, 12.34, 0.3E-01, ‘”ftghjkjl”‘, None, True, False
In the ...
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Name some built-in literals of Python.
List, Tuple ...
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What are the two Boolean literals in Python ?
The two ...
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Write the following real constants into fractional form : 0.13E04, 0.417E-04, 0.4E-5, .12E02, 12.E02
0.13E04 : ...
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Write the following real constants into exponent form : 23.197, 7.214, 0.00005, 0.319
23.197 : ...
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What is meant by a floating-point literal in Python ? How many ways can a floating literal be represented into ?
Floating point ...
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What are string-literals in Python ? How many ways, can you create String literals in Python ? Are there any differences in them ?
Text enclosed ...
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Which escape sequences represent the newline character and backspace character ? An escape sequence represents how many characters ?
\n is ...
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Why are characters \ , ” and tab typed using escape sequences ?
Because they ...
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How many types of integer literals are allowed in Python ? How are they written ?
Three types ...
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What are literals ? How many types of literals are available in Python ?
Literals are ...
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Ex 3.3

Ex 3.4

Back Exercise Part A

2. How are keywords different from identifiers ?
Keywords are ...
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3. What are literals in Python ? How many types of literals are allowed in Python ?
Literals are ...
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4. Can nongraphic characters be used in Python ? How ? Give examples to support your answer.
Yes nongraphic ...
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5. How are floating constants represented in Python ? Give examples to support your answer.
Floating constants ...
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6. How are string-literals represented and implemented in Python ?
String literals ...
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7. W hich of these is not a legal numeric type in Python ? (a) int ( b ) float (c) decimal.
decimal is ...
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8. Which argument of print( ) would you set for : (i) changing the default separator (space) ? (ii) printing the following line in current line ?
i) to ...
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9. What are operators ? What is their function ? Give examples of some unary and binary operators.
Operators are ...
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10. What is an expression and a statement ?
An expression ...
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11. What all components can a Python program contain ?
A python ...
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12. What do you understand by block/code block/suite in Python ?
A group ...
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13. What is the role of indentation in Python ?
Indentation is ...
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14. What are variables ? How are they important for a program ?
Variables are ...
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15. What do you understand by undefined variable in Python ?
Any variable ...
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16. What is Dynamic Typing feature of Python ?
In python ...
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17. W hat would the following code do : X = Y = 7 ?
It will ...
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18. What is the error in following code : X , Y = 7 ?
The error ...
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19. Following variable definition is creating problem X = 0281, find reasons.
The error ...
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20. “Comments are useful and easy way to enhance readability and understandability of a program. Elaborate with examples.
Comments help ...
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Back Exercise Part B

1. From the following, find out which assignment statement will produce an error. State reason(s) too.
The statements ...
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2. Find out the error(s) in following code fragments :
i) temperature ...
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3. What will be the output produced by following code fragment(s) ?
i) X ...
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4. What is the problem with the following code fragments ?
i) a ...
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5. Predict the output :
x = ...
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6. Predict the output
x, y ...
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7. Predict the output
a) a, ...
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8. Predict the output
a, b, ...
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9. Find the errors in the following code fragment
a) y ...
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10. Find the errors in following code fragment : (The input entered is XI)
c = ...
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11. Consider the following code :
name = ...
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12. Find the errors in following code fragment :
c = ...
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13. What will be returned by Python as result of following statements?
a) >>>type(0) ...
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15. What will be the output produced by following code ?
(a) >>> ...
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14. What will be the output produced by following code ?
(a) >>> ...
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16. Carefully look at the following code and its execution on Python shell. Why is the last assignment giving error ?
>>> a ...
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17. Predict the output
a, b, ...
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18. The id ( ) can be used to get the memory address of a variable. Consider the following code and tell if the id( ) functions will return the same value or not (as the value to be printed via print( ) ) ? Why ? [There are four print( ) function statements that are printing id of variable num below]
num = ...
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19. Consider below given two sets of codes, which are nearly identical, along with their execution in Python shell. Notice that first code-fragment after taking input gives error, while second code-fragment does not produce error. Can you tell why?
a) >>> ...
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20. Predict the output of the following code :
days = ...
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Back Exercise Part C

1. Write a program that displays a joke. But display the punchline only when the user presses enter key. (Hint. You may use input( ))
print('How many ...
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2. Write a program to read today’s date (only del part) from user. Then display how many days are left in the current month.
d, m, ...
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3. Write a program that generates the following output :
5 10 ...
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4. Modify above program so as to print output as 5@10@9.
# code ...
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5. Write the program with maximum three lines of code and that assigns first 5 multiples of a number to 5 variables and then print them.
# Code ...
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6. Write Python program that accepts marks in 5 subjects and outputs average marks.
# Code ...
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7. Write a short program that asks for your height in centimetres and then converts your height to feet and inches. (1 foot = 12 inches, 1 inch = 2.54 cm).
# Code ...
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8. Write a program to read a number n and print n^2, n^3 and n^4.
# Code ...
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9. Write a program to compute simple interest and compound interest.
# Code ...
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10. Write a program to input a number and print its first five multiples.
# Code ...
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11. Write a program to read details like name, class, age of a student and then print the details firstly in same line and then in separate lines. Make sure to have two blank lines in these two different types of prints.
# Code ...
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12. Write a program to read three numbers in three variables and swap first two variables with the sums of first and second, second and third numbers respectively.
# Code ...
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13. Write a program that accepts cost of goods sold (cgos) revenue generated, operating costs (oc) and prints Gross profit, net profit and net profit percentage. [Hint : Net profit = Revenue – egos – oc]
# Code ...
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