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Q Here are three series of letters. Each letter in each series is the first letter of a word. The words in each series are related.

What are the next three letters in each series?

  1. O, T, T, F, F, . . .
  2. S, M, T, W, . . .
  3. D, N, O, S, A, . . .


 
A
  1. S, S, E (for six, seven, eight)
  2. T, F, S (for Thursday, Friday, Saturday)
  3. J, J, M (for July, June, May)
Based on a puzzle inThe World's Best Puzzlesby Charles Barry Townsend. New York: Sterling Publishing, 1986.