Important NCERT Examples 9th
Important NCERT Examples for class 9th chapter - 1 Number System Example 1 : Are the following statements true or false? Give reasons for your answers. (i) Every whole number is a natural number. (ii) Every integer is a rational number. (iii) Every rational number is an integer . Example 2 : Find five rational numbers between 1 and 2. Example 3 : Locate √2 on the number line. Example 4 : Locate √3 on the number line. Example 5 : Find the decimal expansions of 10/3 , 7/8 and 1/7 . Example 6 : Show that 3.142678 is a rational number. In other words, express 3.142678 in the form p/q , where p and q are integers and q ≠ 0. Example 7 : Show that 0.3333... = 0. ⁻⁻3 can be expressed in the form p/q , where p and q are integers and q ≠ 0. Example 8 : Show that 1.272727... = 1.27 can be expressed in the form p/q , where p and q are integers and q ≠ 0. Example 9 : Show that 0.2353535... = 0.235 can be expressed in the form p/q , where p and q are integers and q ≠ 0.