b123456789 b123456789

30-01-2015
Mathematics

Answered

how many two person can be picked out of a group of 7

Answer :

konrad509 konrad509

30-01-2015

[tex]{7 \choose 2}=\dfrac{7!}{2!5!}=\dfrac{6\cdot5}{2}=3\cdot5=15[/tex]

Answer Link

Other Questions

Do gar on the red ant

Part A. Which of the countries relied on solar PV energy for more than half of their renewable energy? A. Germany B. Ireland. C. Nicaragua D. Honduras

2. Give two examples of the multi-unit category of the torso movement and briefly support your choices.

The crime of larceny is a crime against _____. a. ownership b. real property c. possession d. None of the above answers are correct

construct a circle with a central angle and a corresponding inscribed angle find the measurements of the central angle and the inscribed angle

Geometry figure: Make a sketch to show another way Mr. Miller can arrange the desks to seat 10 people for lunch.

A narrative voice that tells multiple people's thoughts, such as in "Paul's Case" or "Sweat," is called?

What are some strategies that can be used when communicating with non-English and limited-English speaking patients?

The is a multiagency operation in West Virginia that evaluates information gathered from a variety of sources. Oa. Institute for Security Technology O b. Global

Find the size of angle x. Give your answer in degrees (°). 43° 75° 39° Q Zoom Not drawn accurately