In a stand there are 15 books. 5 of them are mathematicsbooks.
what the probability of at least two are together?

At least 4/14 = 28.5%

Step-by-step explanation:

Select the location of a math book at the far end. The probability that the book next to it is a math book:

4 remaining math books, out of the 14 remaining books

In the middle, there are two potential spots adjacent to each book, so it could be higher - that’s why I say “at least” 4/14

answer:   35 % is the probability of a late departure or an early arrival.

step-by-step explanation:

let l represents the late departure and e represents the early departure.

then, according to the question,

p(l) = 12 %,   p(e) = 27 % and = 4 %

and, we have to find out,

but, we know that,

which is the required equation that will use to find the probability of a late departure or an early departure.

therefore,   the probability of a late departure or an early arrival =   35 %

hi im bob : l

step-by-step explanation: