Hoover Dam, in the United States, is 223 meters high. Ertan Dam, in China, is 240 meters high. Choose the correct numerical expression to find the difference between the heights of the two dams.

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.