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T H R _ _ Clue
YOU SPLIT THE COINS INTO A GROUP OF NINETY AND A GROUP OF TEN. YOU THEN FLIP ALL OF THE COINS IN THE GROUP OF TEN. WHEN THE LIGHTS ARE TURNED ON YOU'LL FIND THAT THERE ARE AN EQUAL NUMBER OF HEADS IN BOTH GROUPS. THIS METHOD WILL ALWAYS WORK. IF IT'S DIFFICULT TO COMPREHEND HOW THIS WORKS, LET'S LOOK AT AN EXAMPLE. ASSUME THAT THERE ARE 3 COINS THAT HAVE HEADS IN THE GROUP OF NINETY. SO THE GROUP OF TEN WILL HAVE 7 COINS WITH HEADS AND 3 COINS WITH TAILS. WHEN ALL THE COINS ARE FLIPPED IN THE GROUP OF TEN, THE NUMBER OF COINS WITH HEADS WILL BECOME THREE SEPARATE THE COINS INTO 2 GROUPS OF 10 AND 16, THEN FLIP OVER ALL THE COINS IN THE GROUP WITH 10 COINS. TO ILLUSTRATE, LET'S GO THROUGH AN EXAMPLE. IN THE GROUP OF 10, IF THERE ARE 4 HEADS, THEN THERE WOULD BE 6 HEADS IN THE GROUP OF 16. WHEN YOU FLIP ALL THE COINS IN THE GROUP OF 10, YOU WILL GET 6 HEADS IF THE MAN HAD COMMITTED SUICIDE, THE WINDOW THAT HE JUMPED FROM SHOULD HAVE BEEN LEFT OPENED. BUT ALL THE WINDOWS FACING THE DEAD BODY WERE CLOSED. THIS MEANS THAT SOMEONE CLOSED THE WINDOW AFTER THE MAN DIED TAKE THE FIRST 13 CARDS OFF THE TOP OF THE DECK AND FLIP THEM OVER. THIS IS THE FIRST PILE. THE SECOND PILE IS JUST THE REMAINING 39 CARDS AS THEY STARTED. THE LOGIC CAN BE A BIT DIFFICULT TO DIGEST, SO LET'S LOOK AT AN EXAMPLE. LET'S ASSUME THAT FROM THE FIRST 13 CARDS, 5 OF THEM ARE FACE-UP. SO FROM THE REMAINING 39 CARDS, 8 CARDS WILL BE FACE-UP. WHEN WE FLIP THE CARDS FROM THE FIRST PILE OF 13 CARDS, 8 OF THEM WILL BECOME FACE-UP AND 5 WILL BE FACE-DOWN