Class 11 CS Chapter 7 Data Handling Solutions Sumita Arora New Syllabus

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Ex 7.1

Ex 7.2

Ex 7.3

Ex 7.4

Ex 7.5

Ex 7.6

Ex 7.7

Ex 7.8

Back Exercise Part A

10. Are these values equal ? Why/why not ?
2. How many integer types are supported by Python ? Name them.
There are ...
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1. What are data types ? How are they important ?
A data ...
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17. What are augmented assignment operators ? How are they useful ?
Augmented assignment ...
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16. What will be the result given by the following ?
a) type(6+3) ...
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13. Two objects (say a and b) when compared using == , return True. But Python gives False when compared using is operator. Why ? (i.e., a == b is True but why is a is b False ?)
This is ...
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15. If you give the following for str1 = “Hello”, why does Python report error? str1[2] = ‘ p ‘
This reports ...
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11. What is an atom ? What is an expression ?
An atom ...
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14. Given str1 = “Hello”, what will be the values of ?
(a) str1 ...
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12. What is the difference between implicit type conversion and explicit type conversion ?
Implicit type ...
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8. What are three internal key-attributes of a value-variable in Python ? Explain with example.
...
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7. What are immutable an mutable types ? List immutable and mutable types of Python.
The immutable ...
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9. Is it true that if two objects return True for is operator, they will also return True for == operator ?
Yes ...
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6. What will following code print ?
str1 = ...
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3. How are these numbers different from one another ? 33, 33.0, 33j, 33+ j
33 is ...
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5. How many string types does Python support ? How are they different from one another ?
Python supports ...
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4. The complex numbers have two parts : real and imaginary. In which data type are real and imaginary parts represented ?
They are ...
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31. Add parentheses to the following expression to make the order of evaluation more clear. y % 4 == 0 and y % 100 ! = 0 or y % 400 == 0
(((y%4) == ...
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29. Evaluate the following for each expression that is successfully evaluated, determine its value and type for unsuccessful expression, state the reason.
(a) len("hello") ...
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30. Write an expression that uses exactly 3 arithmetic operators with integer literals and produces result as 99.
9*13-20+2 ...
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28. Evaluate and justify :
a) 0 ...
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27. Evaluate and justify :
i) False ...
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25. Evaluate and Justify : (i) 22/17 == 37/47 + 88/83 (ii) len(‘375’)**2.
i) False ...
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26. Evaluate:
i) 22.0/7.0 ...
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24. Write expression to convert the values 17, len(‘ab’) to (i) integer (ii) str (iii) Boolean values
int(17) str(17) ...
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22. int(‘a’) produces error. Why ?
int('a') produces ...
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23. int(‘a’) produces error but following expression having int(‘a’) in it, does not return error. Why ? len(‘fl’) + 2 or int(‘fl’)
This does ...
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19. Given three Boolean variables a, b, c as : a = False, b = True, c = False. Evaluate the following Boolean expressions :
a) b ...
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21. Write following expressions in Python
...
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18. Differentiate between (555/222)**2 and (555.0/222)**2.
There will ...
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20. What would following code fragments result in ? Given x =3.
a) 1<x ...
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Back Exercise Part B

10. Make change in the expression for z of previous question so that the output produced is zero. You cannot change the operators and order of variables. (Hint. Use a function around a sub-expression)
1. What is the result produced by (i) bool(0) (ii) bool(str(0)) ? Justify the outcome.
(i) bool(0) ...
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15. Find the errors(s).
...
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13. Given a string s = “12345”. Can you write an expression that gives sum of all the digits shown inside the string s i.e., the program should be able to produce the result as 15 (1 + 2 + 3 + 4 + 5). [Hint. Uses indexes and convert to integer]
# Output ...
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11. Following expression does not report an error even if it has a sub-expression with ‘divide by zero’ problem :
What changes ...
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12. What is the output produced by following code ?
...
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8. What will be the output of following Python code ?
a = ...
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9. What will be the output of following code ?
x, y ...
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6. What will be output produced by following code ? State reason,
a = ...
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7. What would be the output produced by following code ? Why ?
a, b, ...
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5. What will be output produced by following code ? State reason for this output.
a, b, ...
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2. What will be the output, if input for both the statements is 5 + 4/2.
6 == ...
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3. Following code has an expression with all integer values. Why is the result in floating point form ?
a, b, ...
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4. What will following code print ?
(a) a ...
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Back Exercise Part C