Bryan bought a total of 750 + 250 = <<750+250=1000>>1000 milliliters of milk from the two smaller bottles.

Since 1 liter is equal to 1000 milliliters, then 1000 milliliters is equal to 1000/1000 = <<1000/1000=1>>1 liter.

Therefore, Bryan bought a total of 2 + 1 = <<2+1=3>>3 liters of milk.

# Answer

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<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Bryan bought three different bottles of milk. The bottles contain the following volumes of milk: 2 liters, 750 milliliters, 250 milliliters. How many liters of milk did Bryan buy in total?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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user
3
Bryan bought three different bottles of milk. The bottles contain the following volumes of milk: 2 liters, 750 milliliters, 250 milliliters. How many liters of milk did Bryan buy in total?
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