Any idea about rules of "challenge"?

Question

1. Wrong answer carry negative marks?
2. What is 26XP? Can it be increased or decreased?
3. Challenge starter always play 1st? And after he/she finish then only opponent starts?
4. Once 1st player finishes, opponent can see score? then decide whether to finish the challenge or quit
kindly reply if you you know anything about it. I just played 2 challenges.

Answer 1

1) No. Result is a COUNT of RIGHT answers
2) XP for challenge are choosed by system(Using players level)
3) No. Only if you challenge someone. But another one can challenge you as well
4) No. He can see score only after finishing challange

But i hope they will not drop my 30 xp for losing on low levels.... xp for win / -30 for lose :S Brrr...

Answer 2

Always 5 questions

Answer 3

and number of questions asked will always be 5? or we can set number of questions to be asked in a particular challenge?

Answer 4

and if opponent declines then what happens? And I have already played the challenge