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4 votes
Which of these numbers is an irrational number?

3⁄5

Square root of 4

Square root of 25

Square root of 20

5⁄3

2 Answers

1 vote
Square root of 4 is the correct answer
User Kiran Solkar
by
8.8k points
3 votes

Answer:

D.
√(20)

Explanation:

We have been given some numbers. We are asked to choose the irrational number from our given choices.

We know that a number is rational number, which can be written as a fraction. A number is irrational when it has non-terminating non-repeating decimal.

A.
(3)/(5)

Since given number is fraction, so it is rational.

B.
√(4)


√(4)=2

Since we can write 2 as a fraction
(2)/(1), so it is rational.

C.
√(25)


√(25)=5

Since we can write 5 as a fraction
(5)/(1), so it is rational.

D.
√(20)


√(20)=4.47213595499

Since the given number has non-terminating non-repeating decimal, so it is irrational.

E.
(5)/(3)

Since given number is fraction, so it is rational.

User FooBar
by
7.4k points
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