What is the missing number?
[4984] What is the missing number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 75 - The first user who solved this task is Djordje Timotijevic
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What is the missing number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 75
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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When I Was Your Age ...

The minister was passing a group of young teens sitting on the church lawn and stopped to ask what they were doing.
"Nothing much, Pastor," replied one boy. "We were just seeing who can tell the biggest lie about their sex life." "Boys, boys, boys!" he scolded. "I'm shocked. When I was your age, I never even thought about sex."
In unison they all replied, "You win!"
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Ernst Engel

Born 26 Mar 1821; died 8 Dec 1896 at age 75. German statistician, the head of the Prussian Statistical Bureau (1860-82), known for the "Engel curve," or Engel's law, which states that the proportion of expenditure on food will fall as income rises, i.e. food is a necessary good. Engel's law applies to goods as a whole. Demand for food, clothing and shelter - and for most manufactured products - doesn't keep pace with increases in incomes. Engel curves are useful for separating the effect of income on demand from the effects of changes in relative prices. Engel also examined the relationship between the size of the Prussian rye harvest and the average price of rye over a number of years prior to 1860, probably the first empirical study of the relationship between price and supply.
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