Mean x = Sum of nos. / Count of numbers = 1111/11 = 101
Median y = Middle term when number are arranged in ascending order = 104
Mode z = Number which is present maximum number of times = 91
2x^2 + 4zy + 3z^2 = 2* (101)^2 + 4*91*104 + 3*(91)^2 = 83101