Which number is missing?
[2] Which number is missing? - Which number is missing? - #brainteasers #math #riddles - Correct Answers: 220 - The first user who solved this task is Eric Newton
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Which number is missing?

Which number is missing?
Correct answers: 220
The first user who solved this task is Eric Newton.
#brainteasers #math #riddles
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A man walks into a pharmacy an...

A man walks into a pharmacy and wanders up and down the aisles. The sales girl notices him and asks him if she can help him. He answers that he is looking for a box of tampons for his wife. She directs him down the correct aisle.
A few minutes later, he deposits a huge bag of cottonballs and a ball of string on the counter.
The sales girl says, confused, "Sir, I thought you were looking for some tampons for your wife?"
He answers, "You see, it's like this, yesterday, I sent my wife to the store to get me a carton of cigarettes, and she came back with a tin of tobacco and some rolling papers; cause it's so-o-o much cheaper. So, I figure if I have to roll my own... so does she."
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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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