Matrices Test

Result

Matrices Test - 14

Score
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Weekly Quiz Competition

Question 1
1 / -0

Total number of possible matrices of order 3 × 3 with each entry 2 or 0 is

A
9

B
27

C
81

D
512

Solution

Total number of possible matrices of order 3 x 3 with each entry 2 or 0 is 2⁹ i.e., 512.
Question 2
1 / -0

If A and B are two matrices of the order 3 × m and 3 × n, respectively, and m = n, then the order of matrix (5A – 2B) is

A
m x 3

B
3 x 3

C
m x n

D
3 x n

Solution

A_3×m and B_3×n are two matrices. If m = n, then A and B have same orders as 3 x n each, so the order of (5A - 2B) should be same as 3 x n.