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Tuples and Dictionaries

CBSE · Class 11 · Computer Science

Quick revision notes for Tuples and Dictionaries — CBSE Class 11 Computer Science. Key concepts, formulas, and definitions for last-minute revision.

42 questions68 flashcards5 concepts

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Key Topics to Revise

1

Tuples: Basic Idea and Creation

  • A tuple is an ordered sequence of elements of different data types, such as integer, float, string, list or even a tuple.
  • Tuple elements are enclosed in round brackets and separated by commas.
  • Tuple elements are accessed by index starting from 0.
2

Tuple Properties and Operations

  • Tuples are immutable; their elements cannot be changed after creation.
  • Attempting item assignment on a tuple raises TypeError: 'tuple' object does not support item assignment.
  • An element inside a tuple may itself be mutable, such as a list, and that inner list can be modified.
3

Tuple Methods and Built-in Functions

  • len() returns the number of elements in a tuple.
  • tuple() creates an empty tuple when no argument is given, and converts a sequence into a tuple when one is passed.
  • count() returns how many times an element appears in a tuple.
4

Tuple Assignment and Nested Tuples

  • Tuple assignment allows values from a tuple on the right side to be assigned to variables on the left side.
  • The number of variables on the left must be the same as the number of elements in the tuple on the right.
  • If the right side is an expression, it is evaluated first and then assigned.

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Full Notes

Key Concepts

A tuple is an ordered sequenceA tuple is immutableA singleTuples support concatenation with +Useful tuple functions include len()

Frequently Asked Questions

What are the important topics in Tuples and Dictionaries for CBSE Class 11 Computer Science?
Tuples and Dictionaries covers several key topics that are frequently asked in CBSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Tuples and Dictionaries — CBSE Class 11 Computer Science?
Understand the core concepts first, then work through the 42 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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