A Pair of Opposites
Difficulty: Easy · Topics: Probability, Probability, Cartesian Product
A=\-3,-1,1,3\, B=\-3,3\
An element is chosen at random from the Cartesian product A× B. What is the probability that it has the form (a,-a)?
Difficulty: Easy · Topics: Probability, Probability, Cartesian Product
A=\-3,-1,1,3\, B=\-3,3\
An element is chosen at random from the Cartesian product A× B. What is the probability that it has the form (a,-a)?