98 to 720

How do you go from 98 to 720 using just one letter?




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Look at this sequence from top to bottom. What is the next number in the sequence?
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In a classic wine shop, the list of three most popular wines are:
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Artificial Intelligence has crushed all human records in the puzzle game “2048,” achieving a high score of 839,732 and beating the game in only 973 moves without using any undo.