Answer to riddle: "I can deliver things with ease.

Regarding "progeny" - Google definition:

prog·e·ny
noun
noun: progeny; plural noun: progenies

A descendant or the descendants of a person, animal, or plant; offspring. "The progeny of mixed marriages."

As far as a riddle ... perhaps consider one off the "offspring" riddles here:

http://www.riddlesdb.com/riddles/the-offspring-of-a

An example might be:

"What do you call the offspring of a circle and a rectangle?"
(The answer is: an oval)

Hope this helps!

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If you can't tell jokes, get somebody who can and you can be the straight man.

which riddle?

Not a riddle but an old English rhyme. Google is your friend.
https://en.wikipedia.org/wiki/Hey_Diddle_Diddle

help solving a riddle Wendy, RE POST make model # and your complete question, so we at Fixya can answer your question effectively.
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Comb

check youtube for walkthrough of games e.g riddle sphinx walkthrough on youtube

The answer is mockingbird