`1/sqrt2` is
A. a fraction
B. a rational number
C. an irrational number
D. none of these
A. a fraction
B. a rational number
C. an irrational number
D. none of these
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Correct Answer – C
` 1/sqrt2 = 1/sqrt2 xx sqrt2/sqrt2 = 1/2 = sqrt2`
Here, `1/2` is rational and ` sqrt 2` is irrational.
And, the product of a rational and on irrational irrational.
`1/2. sqrt2 and ” hence” sqrt2` is irrational.