Compare and contrast a postulate and a conjecture

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.

Afair die is cast four times. calculate the probability of obtaining exactly two 6's round to the nearest tenth of a percent

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities