Question

Q.1) Which of the following is the irrational number?

√81

√25

V8

0.231231... ​

Answer 1

Answer:

√8

Step-by-step explanation:

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Answer 2

Given data: $\sqrt{81},\sqrt{25},\sqrt{8} , 0.231231...$

To find: Irrational number

Solution:

• Irrational number is define as the square root of prime numbers and it cannot be in simple fraction.
• If the given number is not terminated and non repeated sequence it is also called irrational number and pi is denoted as irrational number.
• $\sqrt{81}$ and $\sqrt{25}$ is the perfect square of 9 and 5. So, it is denoted as rational number.
• 0.231231... is not terminated but it has same sequence of number.
• Hence the irrational number is $\sqrt{8}$.