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QUESTION
A boy has 231 marbles. he arranges them in rows so that each row contains on e marble less than the preceding. the last row consist of one marble...
A boy has 231 marbles. he arranges them in rows so that each row contains on e marble less than the preceding. the last row consist of one marble only, which forms the vertex of a triangle. how many marbles are there in the base of the triangle?
