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What is the next number in the series?

15 29 56 108 208 ?




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A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

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Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
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They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
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A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

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Can you replace the question mark with the correct letter?

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There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

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In the four images below, can you find the odd one out?

Odd One Out Riddle

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In a classic wine shop, the list of three most popular wines are:
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How many Watermelons are there in the below picture?

How many Watermelons?

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Crossword puzzles

In the 1920s, people feared that crossword puzzles would contribute to illiteracy.