Express each of the following in the form which form p/q 0.222...
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Given:
0.22222222........
To find:
The p/q form of 0.222.......
Solution:
x = 0.222........ - eq.1
Multiplying both sides with 10 we get,
10x = 2.222....... - eq.2
Subtracting eq.1 from eq.2
10x = 2.222...........
- x = 0.222..........
-----------------------------
9x = 2.000...........
------------------------------
9x = 2
Therefore, x = 2/9 which is in p/q form (p = 2 and q = 9) where q not equal to 0.
Information:
The above done method is called as x method of finding an non - Terminating recurring number to p/q form.
We must multiply both the sides with periodicity i.e on how much digits the bar is that many zeros after 1 must be multiplied.
Ex: 0.2 bar - since bar is on one digit we must multiply it with 10.
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