Real Numbers – class 10th

Real Numbers - class 10th

1 / 10

The least number that is divisible by all the numbers from 1 to 10 is:

100

2520

5040

1000

2 / 10

If HCF (96, 404) = d, then find the value of d.

4

2

8

12

3 / 10

Which of the following is irrational?

3/7

0.101010...

√2

1.5

4 / 10

The decimal expansion of a rational number is either:

Terminating

Non-terminating

Non-repeating

Both (a) and (b)

5 / 10

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

Always rational

Always irrational

Always an integer

May be rational or irrational

6 / 10

If two positive integers a and b are such that the product $180$ and HCF(a, b) = 6, then LCM(a, b) is:

30

36

180

150

7 / 10

The number $0.232323...$ is:

Rational

Irrational

Whole number

Prime number

8 / 10

If a number has a terminating decimal expansion, then it must be expressible in the form:

p/q, where q has only 3 or 9 as prime factors

p/q, where q has only 2 and/or 5 as prime factors

p/q, where q is a prime

p/q, where q has only 7 as a factor

9 / 10

The Fundamental Theorem of Arithmetic states that:

Every number is a multiple of some prime number

Every composite number can be factorized as a product of primes uniquely (except for order)

Every number has at least one prime factor

Every even number is divisible by 2

10 / 10

Which of the following cannot be the denominator of a rational number with a terminating decimal expansion?

8

125

21

50

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