Which of the following numbers is not irrational-5- -2-5- -2-5- -9-5- -3-

The correct option is C 5+ √(9)We know that, nbsp;√(2), √(3) nbsp; are irrational numbers. nbsp; So, if we add any number to nbsp;√(2), or √(3), the r ...

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Sqrt(p) is Irrational, Where p is Prime

Which of the ...

Question

Which of the following numbers is not irrational?

5 + \sqrt{2}

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5 - \sqrt{2}

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5 + \sqrt{3}

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5 + \sqrt{9}

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Solution

The correct option is D $5 + \sqrt{9}$
We know that, $\sqrt{2}, \sqrt{3}$ are irrational numbers.
So, if we add any number to $\sqrt{2}, or \sqrt{3}$ , the resulting number will also be irrartional.

Also, $\sqrt{9} = 3$ is not an irrational number.
Hence, $5 + \sqrt{9} = 5 + 3 = 8$ is not irrational.

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Similar questions

Which of the following is not true?
A. $\frac{1}{3} \times \frac{2}{5} = \frac{2}{5} \times \frac{1}{3}$

B. $\frac{1}{3} \div \frac{2}{5} = \frac{2}{5} \div \frac{1}{3}$

C. $\frac{1}{3} + \frac{2}{5} = \frac{2}{5} + \frac{1}{3}$

D. $\frac{- 1}{3} + \frac{2}{5} = \frac{2}{5} + (\frac{- 1}{3})$

Q. Which of the irrational number does not lie between

\frac{3}{25}

and

\frac{7}{25}

Which of the following are rational numbers and which are not?

$\frac{- 7}{- 25}$

Q. Simplify:

{⎡ ⎢ ⎢ ⎣ {(\frac{25}{9})}^{\frac{5}{2}} ⎤ ⎥ ⎥ ⎦}^{\frac{3}{5}}

which one of the following listed numbers is not a divisor of the number N= (2³⁰-1), is equal to

(a) 2⁵-1 (b) 2⁵+1 (c) 2⁶-1 (d) 2¹⁰+1

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Which of the following numbers is not irrational?

The correct option is D 5+√9We know that, √2,√3 are irrational numbers. So, if we add any number to √2, or √3, the resulting number will also be irrartional. Also, √9=3 is not an irrational number. Hence, 5+√9=5+3=8 is not irrational.