A trick coin ( where the probability of getting a head is 3/4 ) is flipped three times. What is the probability of getting exactly two heads such that the second head will appear on the third flip?

9/64

Step-by-step explanation:

1/4 x 3/4 x 3/4 = 9/64

the answer is 510

step-by-step explanation:

15 • 13 = 195

15 • 12 = 180

15 • 5 = 75

12 • 5 = 60

195 + 180 = 375

375 + 75 = 450

450 + 60 = 510

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.