@hwyl want some nice problems mate?

Question

hwyl · Answer

post it

alexandervonhumboldt2 · Answer

spam


lol joke

what are your questions?

parthkohli · Answer

Find all real values of $a$ for which $x^4 - 2ax^2 + x + a^2 - a = 0$ has all its roots real.

mom. · Answer

ok calculating... this is what I found http://prntscr.com/9isk8j

alexandervonhumboldt2 · Answer

this is a problem for fun, not to find answer in the internet

parthkohli · Answer

:(

anonymous · Answer

its easy but wont interfere :P

parthkohli · Answer

OK, try this one. Three random selections are made from the set {1, 2, 3, ..., 20}. What is the probability that the three selections are in arithmetic progression?

mom. · Answer

the answer is b

mom. · Answer

medal plz

alexandervonhumboldt2 · Answer

????????????????????????????????????????????//

First of all, where did b get from. second plz show your work. third please do not ask for medals

mom. · Answer

|dw:1451157519566:dw|
I worked really hard on this, so is it so unfair to ask for a medal?

alexandervonhumboldt2 · Answer

Please show your work.

alexandervonhumboldt2 · Answer

`The answer is b.`

this is a direct answer without even showing your work.

mom. · Answer

Here is my work:
|dw:1451157648376:dw|