Question: I bet you Rs. 100 that if you give me Rs. 200, I will give you Rs. 300 in return. Would you bet with me? Why?
Answer: No, you should not bet. Let's say you bet and you gave Rs. 200 to me. Now there are 2 possibilities.
CASE I - I will give you Rs. 300
If I give you Rs. 300,then I will win Rs. 100 bet. Thus, you have to give me Rs. 100. This
is NO WIN NO LOSE case.
CASE II - I won't give you Rs. 300
If I won't give you Rs. 300, then I will lose Rs. 100 bet. Thus, I have to give you Rs. 100
which I will give you with smile :-) (of course, from Rs. 200 you gave me initially) Here,
I will make Rs. 100 and you will lose Rs. 100
So the moral - you should not bet !!!