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THE SILVER BOX CONTAINED ANNA'S PICTURE. IF HER PICTURE HAD BEEN IN THE GOLD BOX, THE STATEMENTS ON THE GOLD BOX AND SILVER BOX WOULD HAVE BEEN TRUE. IF HER PICTURE HAD BEEN IN THE BRONZE BOX, THE STATEMENTS ON THE BRONZE BOX AND SILVER BOX WOULD HAVE BEEN TRUE. IF HER PICTURE IS IN THE SILVER BOX, THE STATEMENT ON THE BRONZE BOX WOULD BE TRUE AND THE STATEMENTS ON THE GOLD AND SILVER BOXES WOULD NOT BE TRUE THE ELDEST IS 8 YEARS OLD AND THE 2 YOUNGER ONES ARE 3 YEARS OLD. LET'S BREAK IT DOWN. THE PRODUCT OF THEIR AGES IS 72. SO THE POSSIBLE CHOICES ARE: 2, 2, 18 - SUM(2, 2, 18) = 22 2, 4, 9 - SUM(2, 4, 9) = 15 2, 6, 6 - SUM(2, 6, 6) = 14 2, 3, 12 - SUM(2, 3, 12) = 17 3, 4, 6 - SUM(3, 4, 6) = 13 3, 3, 8 - SUM(3, 3, 8 ) = 14 1, 8, 9 - SUM(1,8,9) = 18 1, 3, 24 - SUM(1, 3, 24) = 28 1, 4, 18 - SUM(1, 4, 18) = 23 1, 2, 36 - SUM(1, 2, 36) = 39 1, 6, 12 - SUM(1, 6, 12) = 19 THE SUM OF THEIR AGES IS THE SAME AS YOUR BIRTH DATE. THAT COULD BE ANYTHING FROM 1 TO 31 BUT THE FACT THAT JACK WAS UNABLE TO FIND OUT THE AGES, IT MEANS THERE ARE TWO OR MORE COMBINATIONS WITH THE SAME SUM. FROM THE CHOICES ABOVE, ONLY TWO OF THEM ARE POSSIBLE NOW. 2, 6, 6 - SUM(2, 6, 6) = 14 3, 3, 8 - SUM(3, 3, 8 ) = 14 SINCE THE ELDEST KID IS TAKING PIANO LESSONS, WE CAN ELIMINATE COMBINATION 1 SINCE THERE ARE TWO ELDEST ONES. THE ANSWER IS 3, 3 AND 8 YOU WOULD ONLY NEED TO TAKE OUT ONE MARBLE BECAUSE WE KNOW THAT ALL OF THE LABELS ARE INCORRECT. SO YOU PULL ONE MARBLE OUT OF THE BOX LABELED "MIXED." IF RED COMES OUT, YOU KNOW THAT HAS TO BE THE ALL-RED BOX, SO YOU PUT THE RED LABEL ON IT. THE BOX LABELLED "BLUE" MUST THEN BE LABELLED "MIXED" BECAUSE YOU KNOW IT IS ALSO LABELED INCORRECTLY, AND THEREFORE CAN'T BE BLUE. YOU WOULD LABEL THE LAST BOX "BLUE" BECAUSE THAT IS THE ONLY COLOR/BOX COMBO LEFT. IF THE FIRST MARBLE YOU PULLED OUT FROM THE BOX LABELED "MIXED" IS A BLUE MARBLE, THEN YOU SOLVE THE PROBLEM IN THE SAME GENERAL WAY THE DAUGHTER SHOULD PICK ENVELOPE 1. STATEMENTS 1 AND 2 ARE FALSE, AND THE ONLY TRUE STATEMENT IS STATEMENT 3. IF THE CHECK WAS IN ENVELOPE 1, THAT WOULD MAKE STATEMENT 1 AND STATEMENT 2 FALSE AND STATEMENT 3 WOULD BE THE ONLY TRUE STATEMENT. IF THE CHECK WAS IN ENVELOPE 2, BOTH STATEMENTS 1 AND 2 WOULD BE TRUE. IF THE CHECK WAS IN ENVELOPE 3, BOTH STATEMENTS 1 AND 3 WOULDBE TRUE