Question

In the expression $5x^3{z}^2$, how many different variables (or unknowns) are there?

• A. $5$
• B. $6$
• C. $2$
• D. $3$

Answer 1

The correct option is C $2$

In the given expression,
$\underset{–}{5x^3{z}^2}$
only two different variables (or unknowns) ${}^{\prime }{x}^{\prime }$ and ${}^{\prime }{z}^{\prime }$are there.