Which number is missing?
[2] Which number is missing? - Which number is missing? - #brainteasers #math #riddles - Correct Answers: 220 - The first user who solved this task is Eric Newton
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Which number is missing?

Which number is missing?
Correct answers: 220
The first user who solved this task is Eric Newton.
#brainteasers #math #riddles
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Assignment Difficulty

An elementary school teacher decides to pole the class on the difficulty of last night's homework assignment:
How many people were able to complete the assignment without parents help?
About 25% of the class raises their hands. How many people we able to complete the assignment with the help of a parent? About 70% of the class raises their hand. The teacher still notices about 5% of the class did not raise their hands.
She then calls out, "How many people had to help a parent complete your assignment?

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First international ballon race

In 1906, the world's first international balloon race began. It was won by a coal-gas balloon, the United States. Pilot Lt. Frank P. Lahm of the U.S. Signal Corps and his co-pilot Maj. Henry B. Hersey, of the Weather Bureau, flew 402 miles (647-km) from Paris, France, to Scarborough, England, in 22-hr 15-min, to win the Gordon-Bennett Cup. The race sponsor, James Gordon-Bennett (1841-1918), publisher of the New York Herald, was known for financing Henry Stanley's expedition into Africa to find David Livingstone. The 1906 balloon race launched at the Jardin des Tuleries, with 250,000 spectators. Of 17 entrants, only seven reached England safely. The American win promoted ballooning back home, and nominated the U.S. as host for the next race, in 1907, held at St. Louis, Missouri.«[Image shows the 1907 race launch of the United States with Major Hersey as pilot, replacing Lahm who had health problems.]
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