Which of the following is a variable?

$5$

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$a$

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$\frac{13}{5}$

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$π$

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Solution

The correct option is B
$a$

$5$ is an integer, which has a fixed value. It cannot be used as a variable.

$a$ can be used as a variable.

$\frac{13}{5}$ also has a fixed value, which cannot be used as a variable.

$π$ is a constant that has a fixed value of $\frac{22}{7}$ . Hence it cannot be used as a variable.

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Similar questions

The general solution of $t a n 2 x = - c o t (x + \frac{π}{3}) i s (n ϵ Z)$

x

cos x = \frac{- 1}{\sqrt{2}}

tan x = 1

{cos}^{- 1} (cos \frac{5 π}{3}) + {sin}^{- 1} (sin \frac{5 π}{3})

\frac{5 π}{7}

{(\frac{5 π}{12})}^{\circ}

- {(\frac{7 π}{12})}^{\circ}

\frac{π}{3}

\frac{5 π^{\circ}}{6}

\frac{2 π^{\circ}}{9}

\frac{7 π^{\circ}}{24}

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