Find number abc
[2648] Find number abc - If 7a421 - 57acc = 1b7bb find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 73 - The first user who solved this task is Donya Sayah30
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Find number abc

If 7a421 - 57acc = 1b7bb find number abc. Multiple solutions may exist.
Correct answers: 73
The first user who solved this task is Donya Sayah30.
#brainteasers #math
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The Umbrella

A 90-year-old man said to his doctor, "I've never felt better. I have an 18-year-old bride who is pregnant with my child. What do you think about that?"
The doctor considered his question for a minute and then said, "I have an elderly friend who is a hunter and never misses a season. One day when he was going out in a bit of a hurry, he accidentally picked up his umbrella instead of his gun. When he got to the Creek, he saw a beaver sitting beside the stream. He raised his umbrella and went, 'bang, bang' and the beaver fell dead. What do you think of that?"
The 90-year-old said, "I'd say somebody else shot that beaver."

The doctor replied, "My point exactly."  

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Royal Greenwich Observatory

In 1675, the Royal Greenwich Observatory was created by Royal Warrant in England by Charles II. Building designed by Sir Christopher Wren (who was also a Professor of Astronomy) was commenced 10 Aug 1675 and finished the following year by John Flamsteed was appointed as the first Astronomer Royal. Its primary uses were in practical astronomy - navigation, timekeeping, determination of star positions. In 1767 the observatory began publishing The Nautical Almanac, which established the longitude of Greenwich as a baseline for time calculations. The almanac's popularity among navigators led in part to the adoption (1884) of the Greenwich meridian as the Earth's prime meridian (0° longitude) and the international time zones.
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