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Find the man
Answer to be found at http://brilliant.org
A 7 X 7 square in the left part of this
illustration is divided into five pieces. Now if
we arrange the pieces in the way shown in
the right part of this illustration, we fit these
pieces into the same 7 X 7 square but with
a small square hole in the center. How
could this happen?
How many squares in this image?
(show how you counted!)
A businessman bought a horse for
10 dollars and sold it for 20 dollars.
He then bought that same horse for
30 dollars and sold it for 40 dollars.
What is the businessman’s total
income from these two deals?
One brick is one kilogram and
half a brick heavy. What is the
weight of one brick?
Don’t cheat!