Q2 of 128 Page 20

Following real numbers are expressed in decimal form. Find whether they are rational or not. If rational. express them in form p/q. Comment on factors of q:

Let × = 0. 9999…. ….eq(1)


As there are repeating digits.


So we multiply by 10


10 × = 9. 9999…. ……..eq(2)


Subtracting (1) from (2):


9 × = 9


× = 1


More from this chapter

All 128 →
2

Following real numbers are expressed in decimal form. Find whether they are rational or not. If rational. express them in form p/q. Comment on factors of q:

 2

Following real numbers are expressed in decimal form. Find whether they are rational or not. If rational. express them in form p/q. Comment on factors of q:

 2

Following real numbers are expressed in decimal form. Find whether they are rational or not. If rational. express them in form p/q. Comment on factors of q:

5. 781

 2

Following real numbers are expressed in decimal form. Find whether they are rational or not. If rational. express them in form p/q. Comment on factors of q:

2. 312