EBK LINEAR ALGEBRA AND ITS APPLICATIONS
6th Edition
ISBN: 9780135851043
Author: Lay
Publisher: PEARSON CO
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A research team consists of 4 senior researchers and 10 research assistants. The team needs to select 2 senior researchers and 2 research assistants to attend a conference. How many different ways can the group being sent to the conference be formed?
There are 25 different varieties of flowering plants found in a natural habitat you are studying. You are asked to randomly select 5 of these flowering plant varieties to bring back to your laboratory for further study.
How many different combinations of are possible? That is, how many possible 5 plant subgroups can be formed out of the 25 total plants found?
A person is tossing a fair, two-sided coin three times and recording the results (either a Heads, H, or a Tails, T). Let E be the event that exactly two heads are tossed.
Which of the following sets represent the event E?
Group of answer choices
{HHT, HTH, THH}
{HHT, THH}
{HHH, HHT, HTH, THH, TTT, TTH, THT, HTT}
{HH}
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