Question

A number is said to be an irrational number if its decimal form is ___________.

• A. terminating
• B. non terminating non repeating
• C. repeating
• D. non terminating repeating

Answer 1

The correct option is B

non terminating non repeating

As the definition of an irrational number says, it has non-terminating non-repeating decimal expansion.

For example, $\frac{22}{7}=\mathrm{3.14159265358...}$
As we see that the decimal form is non terminating and non repeating, it is an irrational number.