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Find number abc

If 6bbc6 - ca964 = 3cb6c find number abc. Multiple solutions may exist.

Correct answers: 2

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Room for fungi

How much room is needed for fungi to grow?

As mushroom as possible.

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Five-needle telegraph demonstrated

In 1837, the five-needle telegraph was demonstrated by English inventors, Charles Wheatstone and William Fothergill Cooke. They ran a six-wire telegraph line 2.4-km from Euston to Camden Town along the Great Western Railway Company railway track. They successfully transmitted and received messages. Wheatstone provided the technological skill and is better remembered in the history of the telegraph while Cooke had the business acumen. This first patent (1837) was impractical because the code used simultaneous combinations of five keys, and so was rather cumbersome, limited to only twenty letters (J, C, Q, U, X and Z were omitted). By 1845, they patented the more important single-needle electric telegraph.«

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