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प्रश्न
In the following equation, find which variables x, y, z etc. represent rational or irrational number:
t2 = 0.4
उत्तर
Given that t2 = 0.4
Now we have to find the value of t
`rArrt=sqrt0.4`
`rArrt=sqrt(4/10)`
`rArrt=2/sqrt10`
So it is an irrational number
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