What mixture of sugars gives positive results for all five tests?

A mixture of glucose, fructose, sucrose, and lactose typically yields positive results for all five common sugar tests: Benedict's test (for reducing sugars), Barfoed's test (for monosaccharides), Molisch's test (for all carbohydrates), Seliwanoff's test (to differentiate between aldoses and ketoses), and the iodine test (for starch). This combination includes both reducing and non-reducing sugars, ensuring a positive outcome across the different tests.