In $- 7 x y^{2} z^{3}$ , write down the coefficient $x y$ .

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Solution

Finding the coefficient of $x y$ :
A coefficient of a term is the constant and variable which are multiplied to the term.
Here, $- 7 x y^{2} z^{3}$ can be written as
$- 7 x y^{2} z^{3} = - 7 \times x \times y^{2} \times z^{3} = - 7 \times x \times y \times y \times z^{3} = - 7 \times y \times z^{3} \times x \times y = x y \times - 7 y z^{3}$
Since, $- 7 y z^{3}$ is multiplied to $x y$
Hence , the coefficient of $x y$ is $- 7 y z^{3}$ .

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