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Question
In the options given below, there are a few terms picked from an algebraic expression in x and y.
Which of them is/are variable?
In the options given below, there are a few terms picked from an algebraic expression in x and y.
Which of them is/are variable?
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Solution
The correct option is C xy
A constant is a number on its own which has a fixed value whose value does not change.
In the given options the values of 'xy', '4x+6y' and 'pxy' are not fixed and can change depending on which value 'x' and 'y' takes, but '7' is a fixed value.
So '7' is a constant and others are variables.
xy
A constant is a number on its own which has a fixed value whose value does not change.
In the given options the values of 'xy', '4x+6y' and 'pxy' are not fixed and can change depending on which value 'x' and 'y' takes, but '7' is a fixed value.
So '7' is a constant and others are variables.
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