Determinants and Matrices

• 2

• 1

• 0

• NONE OF THESE

• O

• NONE OF THESE

• 1

• NONE OF THESE

• 1

• 2

• 3

• none of these

• -3

• 0

• 1

• none iof these

If a matrix has 18 elements, what are the possible orders it can have?

• 5

• 6

• 7

• 8

Let A is square matrix of order 3, |𝐴| ≠ 0 𝑎𝑛𝑑 |3𝐴| = 𝑘|𝐴|, then write the value of k.

• 3

• 18

• 9

• 27

        If A is a square matrix such that 𝐴(𝑎𝑑𝑗 𝐴)  =  8𝐼, where I denotes the identity matrix of the same order, then find the value of|𝐴|.

• 8

• 64

• 2

• NONE OF THESE

The bookshop of a particular school has 10 dozen chemistry books, 8 dozen physics books, 10 dozen economics books. Their selling prices are Rs 80, Rs 60 and Rs 40 each respectively. Find the total amount the bookshop will receive from selling all the books using matrix algebra.

• 20160

• 20106

• 20100

• NONE OF THE ABOVE

has a factor

• 3x+a

• x+a

• a

• none of these