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Find the number of ways to p...

Find the number of ways to place three black pawns on a chessboard.

Correct answers: 23

The first user who solved this task is Neelima Subrahmanyam.

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Marriage counselor

Husband to counselor: We were very happy for 22 years.

Counselor: What happened?

Husband: We got married.

Counselor, turning to wife: Do you agree with your husband's assessment of your marriage?

Wife: Yes, the only thing my husband and I have in common is that we were married on the same day.

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Spitfire

In 1936, the Supermarine Spitfire prototype made its maiden flight from Eastleigh aerodrome (now Southampton Airport), England. Its test-pilot, Capt. Joseph “Mutt” Summers, was reported to be impressed with its performance that his opinion was “Don't touch anything.” The propellor aircraft was designed by Reginald J. Mitchell, using an all-metal monocoque construction, and a high-powered liquid-cooled engine. It could climb to 33,000-ft in about nine minutes, was fast, and easy to manoeuver. Production began at Woolston, turning our the first Spitfires by mid-1938. In WW II, the role of these aircraft in the Battle of Britain (1940) is a high point in Spitfire history. By production end (20 Feb 1948), 12,000 had been built. The RAF kept them in service until 1954. Some privately-owned still remain air-worthy.«

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