Doctor Advice

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?




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In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

Fun With Matchsticks

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John's five friends Rachel, Jacob, Phoebe, Joey and Chandler live on the same road.

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Mathematically
B*C*D = 1260
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Can you tell me the house number of each of John's friends?

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There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.