If Kavita bought $(3x+7)$ copies from the bookseller. If the cost of each copy is rupees $(2x–1)$, then if $x=5$, then  $x$ rupees did Kavita give to the bookseller, find the value of $x$.

Express the following product as a monomial and verify the result for $\mathrm{x}=1$

$\left(3\mathrm{x}\right)\times \left(4\mathrm{x}\right)\times (-5\mathrm{x})$

Express the following product as a monomial and verify the result for $x=1, y=2$.

$\left(\frac{1}{8}{x}^2{y}^4\right)\times \left(\frac{1}{4}{x}^4{y}^2\right)\times \left(xy\right)\times 5$

Find the product of the following pairs of monomials.

$4 \mathrm{and} 7\mathrm{p}$

Express the following product as a monomial and verify the result for $x=1, y=2$

$\left(-\mathrm{x}{\mathrm{y}}^3\right)\times \left(\mathrm{y}{\mathrm{x}}^3\right)\times \left(\mathrm{x}\mathrm{y}\right)$

Express the following product as a monomials and verify the result for $x=1, y=2$.

$\left(\frac{2}{5}{a}^{2}b\right)\times \left(-15b^{2}ac\right)\times \left(-\frac{1}{2}{c}^2\right)$

Express the following product as a monomial and verify the result for $x=1, y=2$.

$\left(-\frac{4}{7}{a}^{2}b\right)\times \left(-\frac{2}{3}{b}^{2}c\right)\times (-\frac{7}{6}{c}^{2}a{)}^{}$

Express the following products as a monomial and verify the result for $\mathrm{x}=1$

${\left({\mathrm{x}}^2\right)}^3\times \left(2\mathrm{x}\right)\times \left(-4\mathrm{x}\right)\times \left(5\right)$

Obtain the volume of rectangular box with the following length, breadth and height respectively.

$5\mathrm{a}, 3{\mathrm{a}}^2, 7{\mathrm{a}}^4$

Express the following products as a monomial and verify the result for $\mathrm{x}=1$

$\left(5{\mathrm{x}}^4\right)\times {\left({\mathrm{x}}^2\right)}^3\times {\left(2\mathrm{x}\right)}^2$

Find the area of rectangle with the following pair of monomials as its length and breadth respectively.

$(\mathrm{p}, \mathrm{q})$

Complete the table of products:

Express the following product as a monomial and verify the result for $\mathrm{x}=1$

$\left(4{\mathrm{x}}^2\right)\times \left(-3\mathrm{x}\right)\times \left(\frac{4}{5}{\mathrm{x}}^3\right)$

Express the following products as a monomial and verify the result for $x=1, y=2$.

$\left(\frac{4}{9}ab{c}^3\right)\times \left(-\frac{27}{5}{a}^3{b}^2\right)\times (-8b^{3}c)$