CBSE Class 9 Number Systems Quiz

A free CBSE Class 9 Number Systems quiz. Play without signing up; sign in to save your score.

CBSE Class 9 classMathematics subjectFree quiz

Number Systems in CBSE Class 9 prove irrationals exist and densify the real line. Students show root 2 is irrational by contradiction, place roots on lines with spiral constructions, rationalise denominators with conjugates, and apply exponent laws to fractional powers.

The CBSE Class 9 Number Systems quiz is free to play without signing up. Sign in to save scores. Classic has a timer; Trivi gives three hearts; Learn is untimed with no score.

What you practice

These are the CBSE Class 9 Number Systems skills this quiz is built around.

Prove root 2 and root 3 irrational by contradiction.
Rationalise denominators using conjugates.
Apply exponent laws to fractional powers.

A useful tip

Assume root 2 equals a/b in lowest terms, then derive both even: the contradiction collapses the assumption. Contradiction framing proves every irrationality result.

Frequently asked questions

What does CBSE Class 9 Number Systems practice?

Practice includes: Prove root 2 and root 3 irrational by contradiction; Rationalise denominators using conjugates; Apply exponent laws to fractional powers.

Is the CBSE Class 9 Number Systems quiz free?

Yes. This quiz is free to play without signing up. Sign in to save your scores and progress.

What game modes can I use?

Classic has a timer; Trivi gives three hearts; Learn is untimed with no score.