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.
To serve 40 people 4 ounces each of potato salad, one needs to make approximately 10 pounds of it. When planning food per person for a large gathering, the serving portion for each person should be one pound.