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.
Beans 8 pounds raw or 20 pounds cooked per 100. Taco shells and tortillas, about 2 crisp and 1 soft per person. I recommend corn. For the rice, you want about 9-10 pounds of raw rice- see the various oven rice recipes for 100-. 8 pounds corn chips per 100 people allows for snacking and taco salad makers.