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Byju's Answer
Standard IX
Mathematics
Decimal Expansion of Rational and Irrational Numbers
Find the rati...
Question
Find the rational number which is represented by the following decimal numbers :
0.11
¯
¯¯¯¯¯¯¯¯¯
¯
2233
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Solution
Let
r
=
0.11
¯
¯¯¯¯¯¯¯¯¯
¯
2233
, then
100
r
and
1000000
r
will be as follows:
100
r
=
100
×
0.11
¯
¯¯¯¯¯¯¯¯¯
¯
2233
=
11.2233....
1000000
r
=
1000000
×
0.11
¯
¯¯¯¯¯¯¯¯¯
¯
2233
=
112233.2233....
Now consider
1000000
r
−
100
r
as shown below:
1000000
r
−
100
r
=
112233.2233
−
11.2233
=
112222.00
⇒
999900
r
=
112222
⇒
r
=
112222
999900
⇒
r
=
56111
499950
Hence, the required rational number is
56111
499950
.
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