Unlisted Phone Number

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?




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why number 8549176320 is one of a kind?

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Birbal was jester, counsellor, and fool to the great Moghul emperor, Akbar.
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and the emperor loved to try to outsmart him.
One day Akbar (emperor) drew a line across the floor.
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Everyone present thought the emperor had finally outsmarted Birbal.
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Yet within moments the emperor and everyone else present had to agree that Birbal had made the line shorter without erasing any of it.
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Amazing Facts

Gamers

In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.