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last 3 solved tasks
If cb4a4 + bc22a = 110b12 find number abc. Multiple solutions may exist.
If 4a3ca + cab32 = 1b83a1 find number abc. Multiple solutions may exist.
If ca63a - 62b6b = 3257a find number abc. Multiple solutions may exist.

Jean(-Rodolphe) Perronet

Died 27 Feb 1794 at age 85 (born 8 Oct 1708).Jean-Rodolphe Perronet was a French civil engineer who was renowned for his stone-arch bridges, especially the Pont de la Concorde, Paris. During construction of a bridge at Mantes in 1763, Perronet made the discovery that the horizontal thrust of a series of elliptical arches was passed along to the abutments at the ends of the bridge. Thus he was able to build extremely flat arches that were supported during construction by timbering (falsework) and mounted on very slender piers, which widened the waterway for navigation and reduced scour from the current.

See if you can do this. Read e...

See if you can do this. Read each line aloud without making any mistakes. If you make a mistake you MUST start over or it won't work.

This is this cat
This is is cat
This is how cat
This is to cat
This is keep cat
This is a cat
This is moron cat
This is busy cat
This is for cat
This is forty cat
This is seconds cat

Now go back and read the THIRD word in each line from the top...
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