BRAIN TEASERS

# Find number abc

If bc7aa + cbc5a = 1aa1b6 find number abc. Multiple solutions may exist.
The first user who solved this task is Fazil Hashim.
#brainteasers #math

### 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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### George Washington

Born 22 Feb 1732; died 14 Dec 1799 at age 67. American surveyor, military leader and president who was an eager student of mathematics in his youth, teaching himself geometry and trigonometry. This led to his early career as a surveyor, proficient at drafting, mapmaking, and designing tables of data. Surveying let him explore regions of Virgina, and earn income to be a landowner by age 19. Mathematics courses in early American education included applications in surveying. For example, it was part of state law in Massachusetts (1827) that any locality with 500 families should have a master capable of instructing “geometry, surveying and algebra.” Thus, long before that law, in a less-known aspect of his life, Washington was equipped with a technical education of service to his community—although he is most famous for fighting in the Revolutionary war and becoming the the first President of the U.S.A.«
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