Challenging War on sololearn.
I start using sololearn last week and notice there is a war on sololearn. Guess what! of course....challenge section. Truth about this ques is..... it's just a fun game. It's not CCNA exam. Ques are proved by community. Ques are not HIGH PRO EXAM but it's fun. Isn't it? :-) We will not be SUPER programmers just by winning this little 5 ques. Some people take it SO SERIOUSLY. Why do you so serious? Feel free...fun with the ques....we are not enimies ...we are sololearn community.