Calculate the number 290
[762] Calculate the number 290 - NUMBERMANIA: Calculate the number 290 using numbers [3, 5, 6, 4, 20, 320] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 40 - The first user who solved this task is Sanja Šabović
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Calculate the number 290

NUMBERMANIA: Calculate the number 290 using numbers [3, 5, 6, 4, 20, 320] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 40
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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10 yo-yo jokes to celebrate National yo-yo day

1. Why don't yo-yos make good friends?
- Because they always let you down!

2. What did the yo-yo say to the tightrope?
- "Now, that's what I call a string walk!"

3. How do yo-yos cheer each other up?
- They say, "Hang in there, it'll be an up and down ride!"

4. Why was the yo-yo so good at making decisions?
- It always knew how to go back and forth!

5. Why don't yo-yos work in zero gravity?
- They can't deal with the ups and downs!

6. What did the yo-yo say to the super glue?
- "I need someone who won't let go!"

7. Why was the yo-yo the life of the party?
- Because it always knew how to unwind!

8. How did the yo-yo become a successful motivational speaker?
- It always knew how to bounce back!

9. What do yo-yos say when they introduce themselves?
- "I’m not as up-tight as I appear!"

10. Why was the yo-yo accused of being a spy?
- Because it always goes undercover!

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Charles Friedel

Died 20 Apr 1899 at age 67 (born 12 Mar 1832).French organic chemist and mineralogist who, with the American chemist James Mason Crafts, discovered in 1877 the chemical process known as the Friedel-Crafts reaction. In 1856, after studying in Strasburg, Friedel was appointed conservator of the mineralogical collections at the Superior National School of Mines. In 1871 he began to lecture at the École Normale and in 1876 became professor of mineralogy at the Sorbonne, but on the death of Wurtz in 1884 he exchanged that position for the chair of organic chemistry. He collaborated in efforts to form diamonds artificially, studied the pyroelectric properties of crystals, determined crystallographic constants, and did research on ketone and aldehyde compounds.
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