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ICSE Question Bank
2025Q3(ii)(c)Matrices
NumericalEasy1 mark
3(ii)

Find:

Figure for this question

5B

Topic: Matrices

Previous-year question practice database

Answer

Exam answer

Given:

B = [[2,1],[4,2]]

5B

= [[5×2, 5×1], [5×4, 5×2]]

= [[10,5], [20,10]]

Answer:

[[10,5],[20,10]].

Explanation

Scalar multiplication multiplies every entry of the matrix by 5.

More from Matrices

Given matrix A = [[2, 3], [1, 2]] and matrix B = [2 −4]. Product AB is a matrix of order:2026Find the values of ‘a’ and ‘b’.2026If A = [[0, 1], [1, 0]], then A² is equal to:2025A + C2025B(A + C)2025B(A + C) − 5B2025