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Model Paper 2 — Applied Maths STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceApplied MathsModel Paper 21 Mark
MCQ
If $A=\left[\begin{array}{rrr}2 & -1 & 3 \\ -4 & 5 & 1\end{array}\right]$ and $B=\left[\begin{array}{rr}2 & 3 \\ 4 & -2 \\ 1 & 5\end{array}\right]$, then:
  • A
    only AB is defined
  • B
    only BA is defined
  • ✓
    AB and BA both are defined
  • D
    AB and BA both are not defined
✓

Answer

Correct option: C.
AB and BA both are defined
(c) AB and BA both are defined
Explanation: AB and BA both are defined

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