myclass24
myclass24your class. your pace.
MathematicsCLASS 10CBSE
answered 28 May 2026

What is an irrational number? Give examples.

A.VERIFIED ANSWERfact-checked by tutors

An irrational number is a real number with a non-terminating, non-repeating decimal expansion cannot be expressed as p/q.

NumberValue (approx.)
√21.41421356...
√31.73205080...
π3.14159265...
e2.71828182...

Note: √4 = 2 is rational. Only square roots of non-perfect squares are irrational.

An irrational number has a decimal that never ends and never repeats, and cannot be written as any fraction p/q.

Suggested Q&A

MATHEMATICS · CLASS 10