1. A is a square matrix and At = A then:

2. A matrix A is said to be a singular matrix. If A is equal to:

3. P₂ is equal to:

4. If a matrix A has m rows and n column we say A is a matrix of order:

5. How many three digit numbers can be formed from the set of integers 0 to 9 inclusive, if
repetition is allowed?

6. If a : b = 2 : 3 and b: c = 4 : 5, find a2 :b2 : bc = ?

7. 8!/5! 2! is equal to:

8. Polynomial consisting of two terms is called:

9. If A⊆S and A = S then P (A):

10. If a * b = a + b +ab, then 3*4-2*3 is  equal to ?