Question

Which of the following is an irrational number? / खालीलपैकी अपरिमेय संख्या कोणती? *
√81
22/7
-27/8
√3​

Answer 1

Step-by-step explanation:

22/7,27/8,✓3

This may help you

Answer 2

Solution :-

checking all given options we get,

1) √81

→ √81

→ √(±9)²

→ ±9

→ (9/1) or (-9/1)

as we can see that, √81 can be written in the form of p/q, where q ≠ 0 . so it is a rational number .

2) 22/7

here,

→ p = 22

→ q = 7 which is not equal to zero.

so, it is a rational number .

3) -27/8

here,

→ p = -27

→ q = 8 which is not equal to zero.

so, it is a rational number .

4) √3

since 3 is not a perfect square and if a square root is not a perfect square, then it is an irrational number. Therefore, √3 is an irrational number .

hence, option (4) is correct answer .

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