Question

Which of the following is an irrational number?

A. π
B. -16/3
C. 2.6
D. 18

Answer 1

Which of the following is an irrational number?

A. π

Answer 2

Option A -
`\pi`

Explanation:

To find : Which of the following is an irrational number?

Solution :

Irrational number is defined as number which cannot be written in the form is p/q where p and q are integers and q is non-zero.

Irrational number is non-repeating and non-terminating.

A)
`\pi`

The value of pi is
`\pi=3.14159265..`

The number is non-terminating and non-repeating.

So,
`\pi` is an irrational number.

B)
`-(16)/(3)`

The number is written in p/q form so it is rational number.

C)
`2.6=(26)/(10)`

The number is written in p/q form so it is rational number.

D) 18

The number is a rational number.

Therefore, Option A is correct.