Can you replace the question mark with a number?
[6372] Can you replace the question mark with a number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 45 - The first user who solved this task is Nasrin 24 T
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Can you replace the question mark with a number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 45
The first user who solved this task is Nasrin 24 T.
#brainteasers #math #riddles
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Sounds more like a nightmare...

An older couple wakes up in the morning and the husband looks over at his wife and says, " Wow! You wouldn't believe the dream I had..."

The wife replies, "Yes, go on tell me."

So the husband says "I had a dream that you left me after 20 years of being married."

The wife says, "Oh, it sounds more like a nightmare."

The husband says, "No, I am sure it was a dream."

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Helium ions from radium

In 1903, the journal Nature reported that helium gas is produced by the radioactive decay of the radium. This key discovery by William Ramsay and Frederick Soddy helped to reveal the structure of atoms. In 1908, Ernest Rutherford confirmed that alpha rays and these radium emanations were one and the same: the nuclei of helium atoms, bearing a positive electrical charge. Each were future Nobel laureates in Chemistry. Ramsey won the Nobel Prize in 1904 for his discovery of the noble gases. Rutherford was recognized in 1908 for his investigations into the disintegration of the elements. Soddy was honoured in 1921 for his pioneering contributions to understanding the chemical properties of radioactive elements such as radium and uranium.[Ref: Ramsay, W. & Soddy, F. Experiments in radio-activity, and the production of helium from radium. Nature, 68, 354 - 355, (1903)]
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