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Find number abc

If a10a1 + 919ac = 1229b9 find number abc. Multiple solutions may exist.

Correct answers: 21

The first user who solved this task is Nasrin 24 T.

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Before you start to judge me

Before you start to judge me, step into my shoes and walk the life i'm living, and if you get as far as i am, just maybe you will see how strong i really am.

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First eclipse photo

In 1851, a total solar eclipse was first captured on a daguerreotype photograph by Busch and Berkowski, at the Royal Observatory in Königsberg, Prussia (now Kalinigrad in Russia). It showed a slight but distinct impression of the corona duringthe total eclipse. Berkowski, a local daguerrotypist whose first name was never published, observed at the Royal Observatory. A small 6-cm refracting telescope was attached to a 15.8-cm Fraunhofer heliometer and a 84-second exposure was taken shortly after the beginning of totality.«[Image: Fraunhoffer heliometer at the Royal Observatory of Königsberg c. 1851 which was used to make first photograph of a total solar eclipse.]

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