SAT math probability

[Brynlee]

SAT math probability question

If and are two distinct positive integers where . What is the probability that equals 2?

Thanks!!

[Thomas]

SAT math probability question

If and are two distinct positive integers where . What is the probability that equals 2?

The possible positive integer pairs for a and b in order to satisfy the equation are (1,5), (2,4), (4,2), (5,1). The pair (3,3) is omitted, since and must be distinct. Therefore the probability of equals 2 is one out of four, i.e. .

Hope these help!!

[Brynlee]

Thanks Thomas!!