Rajan is a name of Hindu / Indian origin, and is commonly used for males.
According to the Food Network, 1/3 to 1/2 pound of potatoes should be allocated per person when preparing mashed potatoes. When serving roasted potatoes, 2 1/2 pounds of potatoes should be allocated per person.
How many potatoes and where to get them. You can grow your own, pick your own, or buy them at the grocery store. It takes about 10 to 14 pounds of potatoes to make 7 quarts; OR 5 to 8 pounds to make 9 pints. This works out to an average of 1 to 2 pounds per quart. But it can vary a lot, depending upon the shape, depth of the eyes, bruises, how deeply you peel, etc.