Q: A is a number a variable or a product of a number and a variable?

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A constant is not a variable at all, and none of its factors was a variable. It is constant.

Neither. It is a discrete variable.

It is a table that summarises data for a number of observations on a variable. For each value (or range of values) that the variable takes the table shows the number of instances in which the variable took that value.

yes

On the contrary, the number of children in a given family is a discontinuous variable. If you were talking about averagenumbers of children, that would be a continuous variable because the average could be any number, 2.3987, or 3.07428, and so forth. But in a given family, the number of children is always an integer. You can have none, or one, or two, or three, etc., but you cannot have two and a quarter children. So the variable is not continuous.

Related questions

Term- a number, a variable, or a product of numbers and variables.

In Algebra a term is either a single number or variable, or numbers and variables multiplied together.

A term.

It is the integral power of the number or the product of the number and variable(s). there is no special name.

A coefficient.

a

A constant is not a variable at all, and none of its factors was a variable. It is constant.

It is a term.

If delivery cost changes with the number of units of product sold then it is variable cost.

It is called a term.

A monomial.

A Monomial;)