CBSE 2026 · Central · Set 4 · Q20 · 1 mark
Assertion (A) : [$\displaystyle 1,2,3$]+'$\displaystyle 123$' is an invalid expression in Python.
Reason (R) : In Python, a list cannot be concatenated with a string.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation for Assertion (A).
Marking-scheme solution
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the
correct explanation for Assertion (A).
Revision of PythonListsUnderstandassertion_reason
More from Revision of Python
- State True or False: In Python, data type of 74 is same as the data type of 74.0.2026
- What will be the output of the following code snippet? t = tuple('tuple') t2 = t[2], t += t2 print(t)2026
- Assuming that D1 is a dictionary in Python, (i) Write a Python expression to check if the key, 'RNo' is…2026
- What will be the output of the following statement? print("PythonProgram"[-1:2:-2])2026
- Which of the following statements is true about dictionaries in Python?2026
- What is the output of the following code snippet? s='War and Peace by Leo Tolstoy' print(s.partition("by"))2026
- Write the output of the following code: def Exam2026(given): new=[] for ch in given[1:-1]: if ch.isupper():…2026
- Write a Python statement to perform the following tasks: (USE BUILT IN FUNCTIONS / METHODS ONLY) (i) To…2026
CBSE Class 12 Computer Science past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.