Question

mr. brunetti writes quadratic equations on a piece of paper and puts them in a hat and then tells his students each to choose two at random.After each student picks,his or her 2 papers go back into the hat. There are 5 papers in total,out of which 4 are functions with minimum.What is the probability of a student choosing 2 functions with minimum.
I got the answer answer as 4/5. Is this correct? plz help me

Answer 1

clearly the 1st choice has a 4/5 chance of being a minimum.

If chosen, there are only 3 left, so the probability of the 2nd draw is 3/4

So, P(min,min) = 4/5 * 3/4 = 3/5