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Observing the fan-shaped statistical chart, we can see that 2 1 1 ice cream with red bean flavor was sold, accounting for 3 1%.

The total amount of ice cream sold is 211÷ 31%= 511(branch).

∵ Fruit flavor accounts for 1%,

The taste of fruit is 5 1 1× duo 1%= 15 1 (stick)

So the answer is: 15 1.