PUNE MCA Exam 2017 Question Paper with answers for online practice

Question : 14 of 41

Marks: +1, -0

If R be the number of ways of choosing triplet (x, y, z) such that z is greater than equal to may (x, y, z) and x, y, z ∊ {1, 2, 3.... n, n+1} then which one of the following is not correct expression are;