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Ex 1.5,3 - Chapter 1 Class 9 Number Systems (Term 1)
Last updated at May 29, 2018 by Teachoo
Ex 1.5
Ex 1.5, 1 (i)
Deleted for CBSE Board 2023 Exams
Ex 1.5, 1 (ii) Important
Ex 1.5, 1 (iii)
Ex 1.5, 1 (iv) Important
Ex 1.5, 1 (v)
Ex 1.5, 2 (i) Important Deleted for CBSE Board 2023 Exams
Ex 1.5, 2 (ii)
Ex 1.5, 2 (iii) Important
Ex 1.5, 2 (iv)
Ex 1.5,3 You are here
Ex 1.5, 4 Deleted for CBSE Board 2023 Exams
Ex 1.5, 5 (i) Deleted for CBSE Board 2023 Exams
Ex 1.5, 5 (ii) Important
Ex 1.5, 5 (iii)
Ex 1.5, 5 (iv) Important
Represent root 3.5 on Number Line Important
Transcript
Ex1.5, 3 Recall, is defined as the ratio of the circumference (say c) of a circle to its diameter (say d). That is, = / . This seems to contradict the fact that is irrational. How will you resolve this contradiction? = / is a rational number when c & d both are rational numbers But the c & d we calculate is not exactly a rational number and either c or d or both can be irrational numbers, Since, / = Irrational So, is irrational.
