8people are boarding a plane 2 have tickets for first class and board before everyone. in how many ways can these people board the aircraft?

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

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