Question

Which of the following is irrational?
A.√(4/9)
B. 4/5
C.√7
D.√81

Answer 1

Answer:C is irrational

Step-by-step explanation:

Answer 2

Option (C) √7 is irrational .

Step-by-step explanation:

(A) √(4/9) = 2/3

Since the number is in the form of p/q form .

Hence, it is a rational number.

 

(B) ⅘  

Since the number is in the form of p/q .

Hence, it is a rational number.

(C) √7 = 2.645751311…….

Since the number is not in the form of p/q . It is non terminating non recurring.  

Hence, it is an irrational number.

(D) √81 = 9/1  

Since the number is in the form of p/q form .

Hence, it is a rational number.

HOPE THIS WILL HELP YOU…

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