alleryIf A is 2 × 3 and B is 2 × 1, which statement about AB and BA is correct?
AOnly AB is defined
BOnly BA is defined
CBoth are defined
DNeither is defined
Answer & Solution
Correct answer: D. Neither is defined
AB needs 3=2 and BA needs 1=2; neither product is compatible.
Keep practising Algebra: Equations, Inequations & Matrices
Browse all Algebra: Equations, Inequations & Matrices questions for ICSE Class 10, or explore more Mathematics topics.
Related questions
The smallest natural number that satisfies x > 4 isA linear inequation in one variable can be written asSolve x + 3 > 5, then x belongs toSolve (2 x - 5) / 3 >= 1 over integers.Solve -2 (x - 3) <= 4. Then x belongs toSolve 2 x + 5 > 11, then x belongs toSolve (x + 2)/3 - (x - 1)/2 <= 1. Then x belongs toThe largest integer x satisfying 3 x - 4 < 2 x + 5 is