Question

Which number is IRRATIONAL? A) 9 B) 27 C) 36 D) 81

Answer 1

Example: π (Pi) is a famous irrational number. ... You cannot write down a simple fraction that equals Pi. The popular approximation of 22/7 = 3.1428571428571... is close but not accurate. Another clue is that the decimal goes on forever without repeating. so B is irrational

Answer 2

Answer:

None of the above

Step-by-step explanation:

We have to find irrational number in given options.

Rational number: That number which can not written as $\frac{p}{q}$ where p and q are integers, $q\neq 0$

Irrational number: The number which is not a rational number then, the number is called irrational number.

A.9

9 is an integer .Therefore, it belongs to rational number set not irrational number set.

So, it is false.

B.27

27 is an integer number.Therefore, it belongs to rational number set not irrational number set.

So, it is false.

C.36

36 is an integer number.Therefore, it belongs to rational number set not irrational number set.

So, it is false.

D.81

81 is an integer number.Therefore, it belongs to rational number set not irrational number set.

So, it is false.]

Answer: none of the above