1. Which of the following is an irrational number?

Question

a. 𝝅
b. -16/3
c. 2.66666666666….
d. 18
2. The display of a student’s calculator shows: 1.2731568, the student is most likely looking at______.
a. A natural number
b. An integer
c. A whole number
d. An irrational number.

Answer 1

1. a. 𝝅 is an irrational number because it is a non-repeating and non-terminating decimal.
2. d. An irrational number because it is a non-repeating and non-terminating decimal.