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JAMB Mathematics 2015 Objective — Question 20

Question 20 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2015 Objective paper, with the correct answer and a full explanation.

If P = [[5,3],[2,1]] and Q = [[4,2],[3,5]], find 2P + Q.

A. [[8,14],[7,7]]
B. [[7,7],[14,8]]
C. [[14,8],[7,7]]Correct
D. [[7,7],[8,14]]

Explanation

2P = [[10,6],[4,2]]; 2P+Q = [[14,8],[7,7]].

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