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

```
Question. A number H is said to be harmonic mean between two numbers a and b if a,H,b is
```
- H.P
- A.P
- G.P
- harmonic mean

```
Question. A radian is measure of central angle of an arc of a circle whose length is equal to the
```
- half of radius of the circle
- diameter of circle
- radius of the circle
- one-third of radius of the circle

```
Question. A relation in which equality is true only for a number of unknowns is called an
```
- identity
- equation
- algebric equation
- algebric relation

```
Question. A right angle is angle of measure
```
- 90″
- 90′
- 60°
- 90°

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

```
Question. A sequence in which any term − its immediate previous term gives a constant is called
```
- geometric sequences
- arithmetic sequences
- harmonic sequences
- complex sequences

```
Question. A sequence in which any term divided by its immediate previous term gives a constant is called
```
- geometric sequences
- arithmetic sequences
- real sequence
- complex sequences

```
Question. A sequence in which any term divided by its immediate previous term is called
```
- arithmetic mean
- geometric mean
- common ratio
- common difference

```
Question. A sequence of numbers whose reciprocals form an arithmetic sequence is called the
```
- arithmetic sequence
- geometric sequence
- harmonic sequence
- complex sequence

```
Question. A subset f of A x B is said to be a function from A to B if domain of f is A and first element of order pairs of f
```
- do not repeat
- do not exist
- repeat
- the members of B

```
Question. A subset of A x A is called a
```
- relation from A to B
- Relation from B to A
- Relation in A
- relation in B

```
Question. A subset of B x A is called a
```
- relation from A to B
- Relation from B to A
- Relation in A
- relation in B