Here I have posted a problem which was down voted and deleted without noting how much tough the problem is. Also my account is disabled from questioning in math.stack website. Can you enable it again?
This one also a college entrance problem,came in India's most prestigious college entrance exam. Some people probably had expertise in "basic" math and down voted and mentioned it off topic. If this website is not for Undergrad or High school student then mention at the step of signing in. Give me a reason to make it off topic which lead to disabling me from asking any more questions.