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4:25 AM
Q: Determine whether the counterfeit coin is heavier or lighter in two weighings on a standard balance

Will Octagon GibsonTo allow new users to solve this puzzle and earn reputation points, I encourage all users whose reputation is 200 or more to not post an answer until 48 hours after this question is posted. Thank you! Among 101 coins, 100 are genuine and have the same weight. The weight of the counterfeit coin i...

6 hours later…
10:21 AM
CCCC hints: 1. This is not an &lit - the clue has a definition part and a wordplay part, not necessarily in that order. 2. Charades. 3. Someone has already said one part of the intended wordplay in this chat... 4. A Bible scholar might have an advantage here...
Ah! "of" = "Ordinary Form" of course.

or maybe not.
11:13 AM
Oh, omega is the end, and it's o' mega (of tremendous). Nice clue.
@msh210 That's it!
Sheesh, took us long enough.
CCCC: A street drug some pushers encouraged at first; expense skyrocketed latterly (5)
I was surprised it didn't go almost immediately. But I guess only 4 words doesn't give you much to play with...
@Stiv the fact that "end of" is an indicator didn't help :-)
Yeah, that was fun to include :)
11:28 AM
@msh210 Nice find. And in hindsight, it's not something overly hard so I don't know why I didn't find it at all
11:39 AM
@oAlt ikr? Once I saw it, I was kicking myself.
2 hours later…
1:13 PM
Q: Guess color of your hat cooperatively, goal is all correct or all incorrect

Lasting HowlingLet $n$ be an integer. $n$ logicians standing in a circle are blindfolded and a hat of either red or blue is put on each person's head. Blindfolds are then removed and each person can now see everybody's hat color but her own. No communication in any form is allowed after the hats have been place...

1:59 PM
Q: Interesting equation with fractions

Dmitry KamenetskyFind distinct integers $a$, $b$, $c$ and $d$ such that $\frac{1}{a}+\frac{1}{b}+\frac{1}{c}-\frac{1}{d} = \frac{1}{a} * \frac{1}{b} * \frac{1}{c} * -\frac{1}{d}$ No calculators or computers allowed.

4 hours later…
5:31 PM
@msh210 s_ p_ e_ _e _d
2 hours later…
7:29 PM
@msh210 Nice
8:00 PM
@juicifer yes indeed
8:56 PM
CCCC: Project featuring Daft Punk is Resorting to Arby's (7)
9:10 PM
@juicifer gotta be Starboy*
@msh210 that's the one
CCCC: Turing-machined scripts essentially out-slump (5)
2 hours later…
11:10 PM
Q: Even more interesting equation with fractions

Dmitry KamenetskyCan you find distinct positive integers $a_1, a_2, \ldots, a_{n-1}, a_n$ for any $n$ such that $$-\frac{1}{a_1}+\frac{1}{a_2}+\ldots+\frac{1}{a_{n-1}}+\frac{1}{a_n} = -\frac{1}{a_1} \cdot \frac{1}{a_2} \cdot \ldots \cdot \frac{1}{a_{n-1}} \cdot \frac{1}{a_n}$$ The previous puzzle shows that a sol...


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