Question

Form the equation.

Two-digit number, whose ten's digit is $\mathrm{x}$ and units digit is $\mathrm{y}$.

Answer 1

Formation of an Expression:

Given, unit's digit of a number $=\mathrm{y}$

and ten's digit of a number $=\mathrm{x}$

Then, a two-digit number $=10\left(\mathrm{ten}\text{'}\mathrm{s}\mathrm{place}\mathrm{digit}\right)+\mathrm{unit}\text{'}\mathrm{s}\mathrm{place}\mathrm{digit}$

$=10\mathrm{x}+\mathrm{y}$

Hence, a two-digit number is $10\mathrm{x}+\mathrm{y}$.