55% of graduates find a job in field, probability that 1 of 7 random graduate find a job

Question

the actual problem:  A study conducted at a certain college shows that 55% of the school's graduates find a job in their chosen field within a year after graduation. Find the probability that among 7 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating

Answer 1

wot yu need tu du is:

chans 1 student will NOT find a job=45%

chans 7 students will NOT find a job=(0.45)^7

=0.0037366945

or 0.0037

thus chans 1 av 7 students will find job=1-0.0037

=0.996263

or 99.6%