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Byju's Answer
Standard IX
Mathematics
Expressing Decimals as Rational Numbers
Express 1.419...
Question
Express 1.4191919..... in the form of
p
q
, where p and q are integer and q
≠
0.
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Solution
Given, the expression
1.4191919...
Let
1.4191919....
=
x
⟹
(
i
)
.
Multiplying
(
i
)
by
10
,
⟹
14.191919....
=
10
x
⟹
(
i
i
)
.
Multiplying
(
i
i
)
by
1000
,
⟹
1419.191919....
=
1000
x
⟹
(
i
i
i
)
.
Then,
(
i
i
i
)
−
(
i
i
)
⟹
1000
x
−
10
x
=
1419.191919....
−
14.191919....
⟹
990
x
=
1405
⟹
x
=
1405
990
=
281
198
.
Hencs,
1.4191919...
in
p
q
is
281
198
.
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