What has one letter

What has one letter and starts with an E?




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Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

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What do the following words have in common?

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An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

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