Normally 24 D on an AC meaning 24 doors on an advent calendar. Could be referring to a double door as is often seen for the 24th of December, more likely just countng Christmas Day by mistake.
25 Cents for a Postage Stamp
-44 Assassination of Julius Caesar (-44 means 44 BC)
ten commandments
21 Consonants in the Alphabet
4 Cardinal Points of the Compass
10 Centuries in a Millenium
7 C in the W = 7 Continents in the World.
100 counties in North Carolina
100 Runs in a Century
This is a Ditloid. The answer is 0 (zero) Sides on a Circle.
122 spaces in a Chinese checker board
4 g in a cc is a ditloid, a type of word puzzle, each letter in the ditloid is the beginning of a word , you have the work it out, in this case the answer is Four Ghosts in a Christmas Carol.