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Is 5.78778777 font size decreased by 4 . font size decreased by 4 . font size decreased by 4 . a rational or irrational number?
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rational number
irrational number
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GPT-5 mini
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Irrational number.
Reason: the decimal 5.787787777... (with the blocks of 7's getting longer) is nonterminating and not eventually periodic. A rational number has a decimal expansion that eventually repeats a fixed block of digits; here the pattern of 7's keeps changing (no fixed repeating block), so the number is irrational.
Reason: the decimal 5.787787777... (with the blocks of 7's getting longer) is nonterminating and not eventually periodic. A rational number has a decimal expansion that eventually repeats a fixed block of digits; here the pattern of 7's keeps changing (no fixed repeating block), so the number is irrational.
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