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0 / 60 seg.
What number can you subtract half from to obtain a result of zero?
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8
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Clue
THE NUMBER 8. IT'S MADE UP OF TWO ZEROS, ONE ON TOP OF THE OTHER
ONLY ONCE. THIS IS BECAUSE WHEN YOU SUBTRACT 5 FROM 25 FOR THE FIRST TIME, IT BECOMES NUMBER 20, THEN 15 AND SO ON
IT'S 8. CUT IT IN HALF, AND YOU GET ZERO (OR NOTHING): 8 -> O
ONCE, BECAUSE AFTER YOU SUBTRACT IT'S NOT 25 ANYMORE
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