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Variable and Constant

Find the numb...

Question

Find the number of variables in the expression: $5 x + 8 y + 7$ .

A

4

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B

2

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C

1

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D

3

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Solution

The correct option is B 2
The word ‘variable’ means something that can vary or change. The value of a variable is not fixed. It can take different values.

In the given expression $5 x + 8 y + 7$ , there are two variables $x$ and $y$ .

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