Mathematics Chapter 1: Real Numbers - Set 2

Question 1

If LCM $(55, 99) = 495$, then HCF $(55, 99)$ is

Accepted Answer

11

Answer

13

Answer

16

Answer

23

Question 2

$\left(\sqrt{2}+\sqrt{3}\right)-\left(3-2\sqrt{5}\right)$ is ______

Accepted Answer

Irrational Number

Answer

Rational Number

Answer

Natural Number

Answer

None of these

Question 3

The HCF of two consecutive numbers $x$ and $x+1$ is always -

Accepted Answer

1

Answer

0

Answer

$x$

Answer

$x+1$

Question 4

The HCF of two Co-prime numbers is _______.

Accepted Answer

always 1

Answer

always 0

Answer

always 2

Answer

always less than 3

Question 5

$\left(3+\sqrt{5}\right)\left(3-\sqrt{5}\right)$ is ______.

Accepted Answer

all of the above

Answer

a natural number

Answer

a whole number

Answer

a rational number

Question 6

The least positive integer divisible by 16 and 28 is _____.

Accepted Answer

112

Answer

124

Answer

114

Answer

120

Question 7

The smallest composite number is -

Accepted Answer

3

Answer

4

Answer

2

Answer

1

Question 8

For some integers q, the odd integers is expressed in the form of ______

Answer

$q + 1$

Answer

$2q + 1$

Answer

$2q$

Answer

$q$

Question 9

$7+\sqrt{2}$ is a _____.

Accepted Answer

Irrational number

Answer

Rational number

Answer

Integers

Answer

Rational or irrational number

Question 10

Find the HCF of 42 and 35 using the euclid’s division algorithm.

Accepted Answer

7

Answer

6

Answer

4

Answer

12

CHAPTER-1 REAL NUMBER (SET-2)

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