Ages of Daughters

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?




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Now, the question is…Who owns the fish?

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You knock a Table over in the library, and suddenly 20 eyes are looking at you.

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He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
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There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.