```
Question. A closed set with respect to some binary operation is called semi- group if
```
- * is associative
- * is commutative
- * is anti-commutative
- identity element exists

```
Question. A declarative statement which may be true or false but not both is called
```
- Proposition
- Deduction
- Induction
- knowledge

```
Question. A fraction in which degree of numberator is greater than degree of denominator
```
- a proper fraction
- an improper fraction
- equation
- algebric relation

```
Question. A function from A to B is called onto function if its range is
```
- B
- A
- Neither A nor B
- Both A and B

```
Question. A function in which second element of order pair are distinct is called
```
- onto function
- one-one function
- identity function
- inverse function

```
Question. A function whose domain is set of natural numbers is called
```
- sequence
- series
- identity function
- onto function

```
Question. A function whose range consists of just one element is called is
```
- onto function
- one-one function
- constant function
- identity function

```
Question. A geometric mean between 2 and 4 is are
```
- ±8√(2)
- ±4√(2)
- ±2√(2)
- ±√(2)

```
Question. A geometric mean between 2 and 8 is also
```
- 5
- −4
- −3
- None of Above

```
Question. A matrix having m rows and n columns with m = n is said to be a
```
- rectangular matrix
- square matrix
- identity matrix
- scaler matrix

```
Question. A matrix having m rows and n columns with m ≠ n is said to be a
```
- rectangular matrix
- square matrix
- identity matrix
- scaler matrix

```
Question. A monoid is always a
```
- A group
- a commutative group
- a non abelian group
- groupoid

```
Question. A number A is said to be arithmetic mean between two numbers a and b if a,A,b is
```
- a sequence
- not a sequence
- G.P
- A.P