The Wheel of Time turns, and Ages come and pass, leaving memories that become legend.
Legend and names fades to myth, and even myth is long forgotten when the Age that gave it birth comes again.
In one Age, called the 2nd Age by some, an Age yet to come, an Age long past, a wind rose.
The wind...
Here are two identical cubes:
Your challenge:
Start with two cubes of exactly the same size.
Cut the surface of each of these two cubes along its edges and unfold the surface into a 2D shape. (So you now have two 2D shapes.)
Now show how to re-fold these two 2D shapes to form the surface of a s...
Last week the store's receipt printer removed lines randomly from each item amount.
A technician repaired the printer, but now it adds lines randomly to each item amount!
The cashier told me that for receipts with 3 items (like mine below):
The total is always correct.
It adds more lines to the ...
Each tile belongs to at least one as-yet-unknown category but which belongs where and why?
The puzzle is as follows:
Suppose that you have a square whose sides measure 1 inch. Let each vertex be $A$, $B$, $C$ and $D$. Now, pick a point $E$ on the interior of this square so that $\angle{EDA}=60^{\circ}$ and $\angle{CBE}=15^{\circ}$. With this in mind and relying only in synthetic geome...
The operator • acts on two numbers to give the following outcomes:
20•2=51 9•8=0 7•3=66 23•14=0 25•2=56
30•12=364 16•9=259 15•22=0
What is the value of 20•1?
A. 0
B. 19
C. 20
D. 32
E. None of the above
Any comments and suggestions on how to solve this problem w...
