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Which three letters have the same distance as they have in the alphabetical order although they have changed places ?
In following number series, two terms have been put within brackets. Choose the appropriate option - Find out the missing number in the following sequence :1, 3, 3, 6, 7, 9, ?, 12, 21.
Choose the correct alternative from the following : - Assertion (A) : Cut fruits and vegetables should not be kept in open for long. Reason (R) : Their vitamin content is ruined.