If A=PQ, row operations on P correspond to row operations on A (since P multiplies from the left), keeping Q unchanged.
Column operations on P would not directly correspond. So row swaps and row combinations (A and B) work.
Let A = PQ. The elementary operation on A, that produces the same effect as it does on applying on P and keeping Q unchanged is : (A) R_i ↔ R_j (B)…
CUET UG 2023 — Mathematics Algebra
2023mcqmedium
Let A = PQ. The elementary operation on A, that produces the same effect as it does on applying on P and keeping Q unchanged is :
(A) Ri↔Rj
(B) Ri→Ri+KRj
(C) Ci→KCi
(D) Ci→Ci+KCj
Choose the correct answer from the options given below :
Official previous-year question
Held on 22 May 2023 · Verified 13 Jul 2026.
Options
- A
(A) and (B) Only
- B
(A), (B) and (D) Only
- C
(A), (C) and (D) Only
- D
(B) and (D) Only
Did you get this right?
Sign in to track your attempts and accuracy.
Your note
Sign in to keep a private note on this question. Nothing you write is ever public.
CUET UG Algebra in other years
More CUET UG Algebra questions
If f(x) = 2x + 3, then f⁻¹(x) is:
2026easy
If $\vec{a}$ is a unit vector perpendicular to both the vectors $\vec{b} = \hat{j} + \hat{2k}$ and $\vec{c} = \hat{i} + 2\hat{j}$, then $\hat{a}$ is equal to
2025medium
If the roots of the equation x² - 5x + k = 0 are in the ratio 2:3, then the value of k is:
2025medium
A function $f: \mathbb{R} \rightarrow \{x \in \mathbb{R}: -1 < x < 1\}$ is defined as $f(x) = \frac{x}{1+|x|}$, then $f$ is:
2025medium
If A is a square matrix such that $A^2 = A$ and I is the identity matrix of same order as A, then the value of $(A-2I)^2 - (2A + I)^2 + 11A$ is:
2025medium
Other Mathematics topics for CUET UG
Keep practicing Algebra
Work through every CUET UG Algebra PYQ, year by year.