Calculate the number 1172
[4053] Calculate the number 1172 - NUMBERMANIA: Calculate the number 1172 using numbers [9, 3, 3, 4, 72, 424] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 22 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 1172

NUMBERMANIA: Calculate the number 1172 using numbers [9, 3, 3, 4, 72, 424] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 22
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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God is watching

One Sunday a priest announced he was passing out minature crosses made of palm leaves. "Put this cross in the room where your family argues most," he advised. "When you look at it, the cross will remind you that God is watching."

When the parishoners were leaving church, a woman walked up to the priest, shook his hand and said, "I'll take five."

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DuPrene

In 1931, The DuPont company, of Wilmington, Delaware, announced the first synthetic rubber. It was known as DuPrene, and from 1936 as Neoprene. Many scientists were trying to make natural rubber in the 1920s and 30s. One of the Wallace Carothers team, Gerard Berchet, had left a sample of monovinylacetylene in a jar with hydrochloric acid (HCl) for about five weeks. Then on 17 Apr 1930, coworker Arnold M. Collins happened to look in that jar and found a rubbery white material. The HCl had reacted with the vinylacetylene, making chloroprene, which then polymerized to become polychloroprene. The new rubber was expensive, but resisted oil and gasoline, which natural rubber didn't. It was the first good synthetic rubber.[Image: Wallace Carothers showing the new DuPrene product]
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