Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality n(n+1)/2 <= 1000000000 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         n * ( n + 1 ) / 2 <= 1000000000         (1)

---

    From inequality(1)：
         n ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

---

    The final solution set is :
         n ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

Your problem has not been solved here? Please take a look at the  hot problems ！