NCERT Exemplar Solutions
Class 10 - Mathematics - CHAPTER 1: Real Numbers
Exercise 1.1 - Multiple Choice Questions

Choose the correct answer from the given four options in the following questions:

Question.  1

For some integer m, every even integer is of the form

(A)

\(m\)

(B)

\(m + 1\)

(C)

\(2m\)

(D)

\(2m + 1\)

Handwritten Notes

Open

Question.  2

For some integer \(q\), every odd integer is of the form

(A)

\(q\)

(B)

\(q + 1\)

(C)

\(2q\)

(D)

\(2q + 1\)

Handwritten Notes

Open

Question.  3

\(n^2 – 1\) is divisible by 8, if \(n\) is

(A)

an integer

(B)

a natural number

(C)

an odd integer

(D)

an even integer

Handwritten Notes

Open

Question.  4

If the HCF of 65 and 117 is expressible in the form \(65m – 117\), then the value of \(m\) is

(A)

4

(B)

2

(C)

1

(D)

3

Handwritten Notes

Open

Question.  5

The largest number which divides 70 and 125, leaving remainders 5 and 8, respectively, is

(A)

13

(B)

65

(C)

875

(D)

1750

Handwritten Notes

Open

Question.  6

If two positive integers a and b are written as \(a = x^3y^2\) and \(b = xy^3\); \(x, y\) are prime numbers, then \(HCF(a, b)\) is

(A)

\(xy\)

(B)

\(xy^2\)

(C)

\(x^3y^3\)

(D)

\(x^2y^2\)

Handwritten Notes

Open

Question.  7

If two positive integers p and q can be expressed as \(p = ab^2\) and \(q = a^3b\); \(a, b\) being prime numbers, then \(LCM(p, q)\) is

(A)

\(ab\)

(B)

\(a^2b^2\)

(C)

\(a^3b^2\)

(D)

\(a^3b^3\)

Handwritten Notes

Open

Question.  8

The product of a non-zero rational and an irrational number is

(A)

always irrational

(B)

always rational

(C)

rational or irrational

(D)

one

Handwritten Notes

Open

Question.  9

The least number that is divisible by all the numbers from 1 to 10 (both inclusive) is

(A)

10

(B)

100

(C)

504

(D)

2520

Handwritten Notes

Open

Question.  10

The decimal expansion of the rational number \(\dfrac{14587}{1250}\) will terminate after:

(A)

one decimal place

(B)

two decimal places

(C)

three decimal places

(D)

four decimal places

Handwritten Notes

Open

NCERT Exemplar Solutions Class 10 – Mathematics – CHAPTER 1: Real Numbers – Exercise 1.1 - Multiple Choice Questions | Detailed Answers