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_ _ _ _=30 Each _ Can Have (1,3) (5,9) (7,11) (13,15) In The Specified Order. - Math Discussion
_ _ _ _=30 each _ can have (1,3) (5,9) (7,11) (13,15) in the specified order.
first can use 1 or 3, second _ can use 5 or 9 so on. Find all possible answers.
