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0 / 60 seg.
Why is a manhole round? Why is it better to have round manhole covers compared to square manhole covers?
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Clue
TOM IS THE KILLER AND BILL SPOKE THE TRUTH. IF BILL WAS THE KILLER, BOTH TOM AND HARRY WILL BE TELLING THE TRUTH. IF HARRY WAS THE KILLER, NONE OF THE STATEMENTS WILL BE TRUE. IF MIKE WAS THE KILLER, NONE OF THE STATEMENTS WILL BE TRUE
ON THURSDAY. THEY CAN ONLY MAKE THIS STATEMENT DURING THE BORDER DAYS - ON THE BORDER DAY THEY TELL THE TRUTH AND ON THE NEXT DAY THEY LIE, OR VICE VERSE. FOR JAMES, HIS BORDER DAYS ARE ON THURSDAYS AND SUNDAYS. FOR JONATHAN, HIS BORDER DAYS ARE ON MONDAYS AND THURSDAYS. SO, ONLY ON THURSDAYS CAN THEY BOTH MAKE THE STATEMENT
7 DAYS. ONE COP HAS TO SEARCH CLOCKWISE AND THE OTHER COP HAS TO SEARCH ANTI CLOCKWISE. SO, THE COPS START SEARCHING AT: CAVE 13 AND CAVE 1 ON THE 1ST DAY CAVE 12 AND CAVE 2 ON 2ND DAY CAVE 11 AND CAVE 3 ON 3RD DAY CAVE 10 AND CAVE 4 ON 4TH DAY CAVE 9 AND CAVE 5 ON 5TH DAY CAVE 8 AND CAVE 6 ON 6TH DAY CAVE 7 ON 7TH DAY THE WORST CASE IS WHEN THE THIEF STAYS IN CAVE 7 AND DOES NOT MOVE
A SQUARE MANHOLE COVER CAN FALL INTO THE MANHOLE AS THE DIAGONAL LENGTH OF A SQUARE MANHOLE IS GREATER THAN THE SIDES. A ROUND MANHOLE COVER CAN NEVER FALL INTO THE MANHOLE
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