Question

A quadruple (a, b, c, d) of positive integers is skewed if the median and mode of a, b, c, d are equal, but strictly greater than the mean of a, b, c, d. How many skewed (a, b, c, d) of positive integers are there that satisfy a b < c d and a + b + c + d = 40?

Answer 1

quadruple (a, b, c, d) of positive integers is skewed if the median and mode of a, b, c, d are equal, but strictly greater than the mean of a, b, c, d. How many skewed (a, b, c, d) of positive integers are there that satisfy a b < c d and a + b + c + d = 40?

Answer 2

Step-by-step explanation:

Density is a measure of mass per unit of volume. ... The average density of an object equals its total mass divided by its total volume. An object made from a comparatively dense material (such as iron) will have less volume than an object of equal mass made from some less dense substance (such as water).