Data are same Q Primary data and
data and data
a. secondary data
b. Ungrouped
c. None of these
d. Grouped

A is the answer because they are the data that are sourced from someplace that has originally collected it. This means that this kind of data has already been collected by some researchers or investigators in the past and is available either in published or unpublished form. This information is impure as statistical operations may have been performed on them already.

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.