MATHEMATICS MATRIX 2) Ad joint of 1 2 is….
1 -1

a) -1 -2 b) 1 -2 c) -1 2 d) -1 0
0 1 0 -1 0 -1 2 1

3) 0 0 is called…..matrix.
1 0

a) Null b) unit c) scalar d) non-singular

4) In matrix multiplication, in general. AB…….BA.
a) = b) = c) > d) <

5) Additive inverse of 1 -2 is….
0 -1
a) 1 2 b) 1 -2 c) -1 2 d) -1 -2
0 -1 0 1 0 2 0 -1

6) A matrix is called……..matrix if number of rows and columns are equal.
a) Square b) unit c) scalar d) non-singular

7) If 2 6 = 0, then x is equal to:
3 x

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a) 6 b) - 6 c) - 9 d) 9

8) If a x = n, then…..
a) a= log x n b) x = log n a c) x = log a n d) a = log n x

9) The logarithm of unity to any base is….
a) 1 b) 10 c) e d) 0

10) Log ( m n ) can be written as…..
a) ( log m ) n b) m log n c) n log m d) log( mn)