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Can you find product of four...

Can you find product of four consecutive prime numbers that add up to 220?

Correct answers: 38

The first user who solved this task is Erkain Mahajanian.

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Why was Blackbeard upset?

Why was Blackbeard upset when he misplaced his jars of urine?
Because a pirate without p is irate.

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Goddard rocket

In 1918, Robert Goddard demonstrated a tube-launched solid propellant rocket, using a music stand as his launching platform,. Goddard began work for the Army in 1917 to design rockets to aid in the war effort. By Sep 1918, Goddard had presented the Army Signal Corps with several options. The simplest version could be fired from trenches; the largest could carry an 8-lb payload a distance of about one mile. Many of these rockets were successfully demonstrated at the Aberdeen Proving Ground, Maryland on 7 Nov 1918. Goddard presented solid-fueled 5, 7.5 and 50-pound rockets capable of being launched from a 5.5-foot long by 2-inch or 3-inch wide tube. Further development led to the World War II bazooka, a small, hand-held rocket launcher.

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