Solve This Number Puzzle
[1980] Solve This Number Puzzle - What will be the missing number? (9, 19, 40, ?, 170) - #brainteasers #math #riddles - Correct Answers: 221 - The first user who solved this task is Sanja Šabović
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Solve This Number Puzzle

What will be the missing number? (9, 19, 40, ?, 170)
Correct answers: 221
The first user who solved this task is Sanja Šabović.
#brainteasers #math #riddles
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Unlucky Parachutist

A man is skydiving, enjoying his free-fall, when he realizes that he has reached the altitude where he must open his parachute. So he pulls on the rip cord, but nothing happens.

“No problem,” he says to himself, “I still have my emergency chute.” So he pulls the rip cord on his emergency parachute, and once again, nothing happens.

Now the man begins to panic. “What am I going to do?” he thinks, “I'm a goner!”

Just then he sees a man flying up from the earth toward him. He can't figure out where this man is coming from, or what he's doing, but he thinks to himself, “Maybe he can help me. If he can't, then I'm done for.”

When the man gets close enough to him, the skydiver cups his hands and shouts down, “Hey, do you know anything about parachutes?”

The other man replies, “No! Do you know anything about gas stoves?”

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John Adolphus Bernard Dahlgren

Died 12 Jul 1870 at age 60 (born 13 Nov 1809). American inventor of the smooth-bore cannon that was, from its shape, familiarly known as the “soda-water bottle.” The shape resulted from a design in which the thickness of metal was varied to match the differences in internal pressure occurring when the cannon was fired. The pressures were determined by boring holes in the walls of the gun and inserting as gauges such objects as pistons or musket balls. He developed the weapons primarily for use on small boats that patrolled the waterways. His iron smoothbores were adopted in 1850 (9-inch gun) and 1851 (11-inch gun). Although designed for use against wooden ships, the iron-clad Monitor class ships carried two of these guns in their turrets, which were replaced by the 15-inch Dahlgrens in 1862.
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