Chứng minh bằng phản chứng: 1, Với mọi n là số tự nhiên nếu n chia hết cho 6 thì n chia hết cho 3
2, Cho abc thuộc R thỏa mãn điều kiện {a, b,c > 0
{ab+bc+ac > 0
{a+b+c > 0
Chứng minh: a, b,c cùng dương

Ifound this on google “a skewed (non-symmetric) distribution is a distribution in which there is no such mirror-imaging. a "skewed right" distribution is one in which the tail is on the right side. a "skewed left" distribution is one in which the tail is on the left side. the above histogram is for a distribution that is skewed right.” i hope this you for what your looking for