If p^2 – 13p + 40 = x, and p is a positive integer between 1 and 10, inclusive, what is the ...

If p^2 – 13p + 40 = x, and p is a positive integer between 1 and 10, inclusive, what is the probability that x < 0?

Quiz

Answer/Solution

1/5

Steps/Work

(p-5)(p-8) = x
p = 6 or 7 for this to be true, so
2/10 = 1/5
Ans :C