Roster Form

Q.

Match the following:
$\begin{array}{cc}\text{Column A}& \text{Column B}\\ 1.\{1,2,4,8\}& \text{A.{x: x is a natural even number less than 10}}\\ 2.\left\{2\right\}& \text{B.{x: x is a prime number and a divisor of 8}}\\ 3.\{2,4,6,8\}& \text{C.{x: x is a divisor of 8}}\\ 4.\{4,6,8,9\}& \text{D.{x: x is a composite number less than 10}}\end{array}$

1. 1 - C, 2 - A, 3 - B, 4 - D

2. 1 - B, 2 - D, 3 - A, 4 - C

3. 1 - A, 2 - D, 3 - C, 4 - B

4. 1 - C, 2 - B, 3 - A, 4 - D

Q.

The elements of the set $A=\{x:x\in Z,-\frac{3}{2}<x<\frac{11}{2}\}$ are ______ (Here, $Z$ stands for the set of integers).

1. -3, -2, -1, 0, 1, 2, 3, 4, 5
2. -1, 0, 1, 2, 3, 4, 5, 6
3. -2, -1, 0, 1, 2, 3, 4, 5
4. -1, 0, 1, 2, 3, 4, 5

Q. The roster form of the set "The set of the months in a year that ends with the letter y" is _________ .

1. {January, February, May}
2. {January, February, May, July}
3. {January, February}
4. {May, July}

Q.

$\text{If}A=\{x:x\in R,x^2=16\text{and}2x=6\},$ then A = ___.

1. {∅}

2. {3}

3. {-4, 3, 4}

4. ∅

Q.

The roster form of the set $\{x:x=2r+3,\text{where}rϵI\text{and}-2<r\le 3\}$.

1. $\{1,3,5,7,9\}$

2. $\{0,1,3,5,7\}$

3. $\{1,3,5,7\}$

4. $\{0,1,3,5,7,9\}$

Q.

The roster form of the set $\{x:x=\frac{n}{2n+1},\text{where}nϵN\text{and}n<4\}$ is ________.

1. $\{\frac{1}{2},\frac{2}{3},\frac{3}{5}\}$

2. $\{\frac{1}{3},\frac{2}{5},\frac{3}{7}\}$

3. $\{\frac{1}{3},\frac{1}{5},\frac{1}{7}\}$

4. $\{\frac{2}{3},\frac{2}{5},\frac{2}{7}\}$

Q. Match the sets in the roster form with the description given.

1. {2, 4, 6, 8}
2. {1, 2, 3, 4, 6, 12}
3. {2, 3, 5, 7}
4. {2, 3}

Q. The set of natural numbers less than 15 and divisible by 3 in roster form is .

1. $\{3,6,9,12\}$
2. $\{1,2,6,9,12\}$
3. $\{1,3,5,12,15\}$
4. $\{3,6,9,12,15\}$

Q. Which of the following is the set of natural numbers, which are less than 15 and divisible by 3 in roster form?

1. $\{1,2,6,9,12\}$
2. $\{1,3,5,12,15\}$
3. $\{3,6,9,12,15\}$
4. $\{3,6,9,12\}$

Q. Choose the correct set from following options.

1. [1, 3, 2, 0]
2. {B A H U}
3. }0{
4. {b, a, l, i}