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    Mathematics
    Grade6
    Easy

    Question

    How many variables are there in the expression 3 x squared y ?

    1. 3
    2. 2
    3. 6
    4. 4

    hintHint:

    The above expression represents an algebraic expression. Algebraic expression has two components, variable and constant. Variable a quantity which doesn't not have any fixed value. It is generally denoted by alphabets. Constant is a quantity with fixed value. In the given question, we have to find number of variables present in the expression.

    The correct answer is: 2

      The given expression is 3x2y.
      In the above equation we have to find number of variables present. We can see there are two different alphabets x and y. But x is raised to power 2. It means that x is multiplied by x. Or in other words x is taken twice. So, if we count the number of alphabets it's 3. So, the variables are 'x', 'x', and 'y'.
      Therefore, option (a) which is '3' is the right answer.

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