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Question
If A = `[(2, -3, 4)]`, B = `[(3),(2),(2)]`, X = `[(1, 2, 3)]` and Y = `[(2),(3),(4)]`, then AB + XY equals
Options
[28]
[24]
28
24
MCQ
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Solution
[28]
Explanation:
Given, A = `[(2, -3, 4)]`,
B = `[(3),(2),(2)]`,
X = `[(1, 2, 3)]`,
Y = `[(2),(3),(4)]`
AB + XY = `[(2, -3, 4)][(3),(2),(2)] + [(1, 2, 3)][(2),(3),(4)]`
= [6 – 6 + 8] + [2 + 6 + 12]
= [8] + [20]
= [28]
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