JEE Main 2021 — Mathematics Algebra
Consider the system of linear equations
−x+y+2z=0
3x−ay+5z=1
2x−2y−az=7
Let S1 be the set of all a∈R for which the system is inconsistent and S2 be the set of all a∈R for which the system has infinitely many solutions. If n(S1) and n(S2) denote the number of elements in S1 and S2 respectively, then
Held on 1 Sept 2021 · Verified 6 Jul 2026.
n(S1)=2,n(S2)=0
n(S1)=2,n(S2)=2
n(S1)=0,n(S2)=2
n(S1)=1,n(S2)=0
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