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Find number abc

If a9a91 - ac9b9 = 6c2 find number abc. Multiple solutions may exist.

Correct answers: 74

The first user who solved this task is Djordje Timotijevic.

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The Sentence

A schoolteacher asked her primary six class to construct sentences with the words: defeat, detail, defense.

There was a pause before a pupil raised his hand and said he could make a sentence with them; "The cow jumped over defense and detail went over defeat."

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James David Forbes

Died 31 Dec 1868 at age 59 (born 20 Apr 1809).Scottish physicist noted for his research on heat conduction and glaciers. In 1836-44, he described the polarization (alignment of waves to vibrate in a plane) of radiant infrared heat by the mineral tourmaline, by transmission through a bundle of thin mica plates, and by reflection from the surfaces of a pile of mica plates. In 1846 he began experiments on the temperature of the Earth at different depths and in different soils near Edinburgh. Later he investigated the laws of heat conduction in bars, and in his last piece of work reported that iron conducts heat less efficiently as its temperature rises. He was among the first to study glacier movements and was involved with Tyndall in the great glacier controversy of the 1850s.

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