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The answer depends on which number is missing.

The sequence could be:

96, 68, 56, 50, 40

68, 61, 56, 50, 40

68, 56, 522/3, 50, 40

68, 56, 50, 46, 40

68, 56, 50, 40, 16.

In fact, there are infinitely more possible answers. Given ANY fifth number to add to the four in the question, it is always possible to find a quartic (power 4) polynomial that will fit all five numbers.

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11y ago

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Q: What is the missing number in the sequence 68 56 50 40?
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