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) Ri↔Rj
(B) Ri→Ri+KRj
(C) Ci→KCi
(D) Ci→Ci+KCj
Choose the correct answer from the options given below :
Held on 22 May 2023 · Verified 13 Jul 2026.
(A) and (B) Only
(A), (B) and (D) Only
(A), (C) and (D) Only
(B) and (D) Only
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