Maths-

General

Easy

Question

# The roster form of the set A = {x : x N, x < 8} is

- A = {1, 2, 3, 4, 5, 6, 7}
- A = {1, 8}
- A = {1, 2, 8}
- A = {3, 4, 8}

Hint:

### We are given a set builder form of a set A. We have to find the roster form or in other words elements of the set A in a curly bracket.

## The correct answer is: A = {1, 2, 3, 4, 5, 6, 7}

### The given set is

A = { x : x ∈ N, x < 8}

We have to write the given set in roster form. It means we have to write all the elements in the set A.

The above set shows two conditions on x.

The first one x ∈ N means x belongs to the set of natural numbers. The natural numbers start from 1 to positive infinity.

The second condition is x < 8. It means x should be less than 8.

The numbers which are less than 8 and belong to set of natural numbers are

1, 2, 3, 4, 5, 6, 7

So, the roster form of the set will be

A = { 1, 2, 3, 4, 5, 6, 7 }

Roster form gives us list of all elements of the sets. Set builder form gives the details of the set in compact form.

### Related Questions to study

chemistry-

The appropriate reagent for the following transformation is:

The appropriate reagent for the following transformation is:

chemistry-General

chemistry-

### The oxidation number of Pt in is

### The oxidation number of Pt in is

chemistry-General

physics-

### A particular emission line, detected in the light from a galaxy, has a wavelength , where is the proper wavelength of the line. The galaxy distance from us

### A particular emission line, detected in the light from a galaxy, has a wavelength , where is the proper wavelength of the line. The galaxy distance from us

physics-General

chemistry-

Identify the set from the following which cannot form acetone in a single –step reaction

Identify the set from the following which cannot form acetone in a single –step reaction

chemistry-General

chemistry-

### (A) is:

### (A) is:

chemistry-General

physics-

### A beam of light *AO* is incident on a glass slab in a direction as shown in figure. The reflected ray *OB* is passed through a Nicol prism on viewing through a Nicole prism, we find on rotating the prism that

### A beam of light *AO* is incident on a glass slab in a direction as shown in figure. The reflected ray *OB* is passed through a Nicol prism on viewing through a Nicole prism, we find on rotating the prism that

physics-General

chemistry-

### The products (A) and (B) are:

### The products (A) and (B) are:

chemistry-General

chemistry-

### The products (B) and (C) are:

### The products (B) and (C) are:

chemistry-General

Maths-

### If Z = aX + bY and r is the correlation coefficient between X and Y, then is equal to -

### If Z = aX + bY and r is the correlation coefficient between X and Y, then is equal to -

Maths-General

maths-

### The imaginary part of is-

### The imaginary part of is-

maths-General

maths-

### If the lines and are concurrent, then the value of l is

### If the lines and are concurrent, then the value of l is

maths-General

maths-

### A: The product of the perpendiculars from

B: The product of perpendiculars from (1,1) to the pair of lines

C: The product of perpendiculars from (0,0) to pair of lines

D: The square of the distance from (0,0) to the point of intersection of Arrange A,B,C,D in ascending order

### A: The product of the perpendiculars from

B: The product of perpendiculars from (1,1) to the pair of lines

C: The product of perpendiculars from (0,0) to pair of lines

D: The square of the distance from (0,0) to the point of intersection of Arrange A,B,C,D in ascending order

maths-General

maths-

### If the equation represents a pair of straight lines, then the square of the distance of their point of intersection from the origin is

### If the equation represents a pair of straight lines, then the square of the distance of their point of intersection from the origin is

maths-General

maths-

### denotes a pair of straight lines, then the point of intersection of the lines is

### denotes a pair of straight lines, then the point of intersection of the lines is

maths-General

maths-

### The point of intersection of the straight lines represented by

### The point of intersection of the straight lines represented by

maths-General