List seven of the elements that are not allowed under the strict DTD.

What is the value ofNumber, given the following:A = 2.3, B = 3.8

```Set Number = Floor(Ceiling(A) * B)``` a. 6 b. 8.74 c. 8 d. 6.1

?Identify a style property that creates a column size of 200-pixels. 

A. ?column-count B. ?column-control C. ?column-width D. ?column-gap