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Find number abc

If ab1b4 - c6b63 = cba1 find number abc. Multiple solutions may exist.

Correct answers: 2

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Robert Maillart

Born 6 Feb 1872; died 5 Apr 1940 at age 68.Swiss bridge engineer whose radical use of reinforced concrete revolutionized masonry arch bridge design. Maillart utilized the structural strength and expressive potential of reinforced concrete to generate a modern form for his bridges. To avoid structural beams and arches, he established a structural form based on both flat and curved concrete slabs reinforced with steel. Using very simple construction concepts, Maillart produced major new forms, fundamentally radical ideas, such as: the open three-hinged, hollow-box arch, the mushroom slab, and the deck-stiffened arch.

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