Logic Puzzle

75. What is the longest word in the English language that can be produced out of the set of letters below? Letters may only be used once in the word so produced.
  What is the next number?
Answer
Ans = OBLIGATE.
76. What number should replace the question mark?
  What is the next number?
Answer
Ans = 83.
There are two alternate sequences: +3 and -4.
123456789101112131415


161718192021222324252627282930


31323334353637383940

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