Question

Which of these numbers is irrational?

Answer 1

An irrational number is not ending and non repeating

Square root of 16=4

Square root of 100=10

Square root of 36=6

These are all rational

The square root of 15=3.872983......

The answer is square root of 15

Answer 2

B.
`√(15)`

Explanation:

We have been given four numbers. We are asked to find the irrational number from our given number.

A.
`√(16)`

`√(16)=4`

Since we can write 4 as a fraction, therefore,
`√(16)` is a rational number.

B.
`√(15)`

`√(15)=3.8729833462`

Since our given number has non-terminating non repeating decimal, therefore,
`√(16)` is an irrational number.

C.
`√(36)`

`√(36)=6`

Since we can write 6 as a fraction, therefore,
`√(36)` is a rational number.

D.
`√(100)`

`√(100)=10`

Since we can write 10 as a fraction, therefore,
`√(100)` is a rational number.