Ben sat outside of his school and made a note of the first 100 cars to pass.
27 were red
In Britain ther are 35 million cars on the road
Use Bens finding to give an estimate of how many red cars are on the road

i have not got your picture clearly so see it once again

the answer is c

step-by-step explanation: i took a test with this question on it

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."