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W _ T _ R Clue
FILL UP THE THREE-GALLON JUG AND POUR IT INTO THE FIVE-GALLON JUG. DO IT AGAIN AND THERE WILL BE ONE GALLON LEFT IN THE THREE-GALLON JUG. EMPTY THE FIVE-GALLON JUG AND POUR IN THE ONE GALLON OF WATER FROM THE THREE-GALLON JUG. FILL THE THREE-GALLON JUG WITH WATER AGAIN AND POUR IT INTO THE FIVE-GALLON JUG. THE FIVE-GALLON JUG SHOULD NOW CONTAIN 4 GALLONS OF WATER A TOTAL OF NINE COINS ARE NEEDED: FOUR (1¢) PENNIES, ONE (5¢) NICKEL, TWO (10¢) DIMES, ONE (25¢) QUARTER AND ONE (50¢) HALF-DOLLAR THE NEXT NUMBER IN THE SEQUENCE IS 1113213211. EACH NUMBER DESCRIBES THE PREVIOUS NUMBER. STARTING WITH 1, THE SECOND NUMBER DESCRIBES IT AS 11 (ONE 1). THEN THE THIRD NUMBER DESCRIBES 11 AS 21 (TWO 1'S). THEN THE FOURTH NUMBER DESCRIBES 21 AS 1211 (ONE 2, ONE 1). TO DESCRIBE 13112221, IT HAS TO BE 1113213211 (ONE 1, ONE 3, TWO 1, THREE 2, ONE 1). IN MATHEMATICS, THIS IS CALLED THE LOOK-AND-SAY SEQUENCE YOU NEED TO TAKE OUT THREE SOCKS. TO HAVE A MATCHING PAIR, YOU NEED TO TAKE 2 SOCKS THAT ARE OF THE SAME COLOR. WHEN YOU TAKE 3 SOCKS, 2 OF THE SOCKS WILL BE OF THE SAME COLOR