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STD 12 - 5. continuity and differentiation — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 - 5. continuity and differentiation4 Marks
Question
If function $f(x) = \left\{ {\begin{array}{*{20}{c}}{x\,\,\,\,\,,}&{{\rm{if}}\,x\,{\rm{\,\,is\,\, rational\,\,}}}\\{1 - x,}&{{\rm{if}}\,x\,{\rm{\,is\,\, irrational\,}}}\end{array},} \right.$ then $f(x)$ is continuous at ...... number of points
✓

Answer

c
(c) At no point, function is continuous.

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