Su6ngiiediv Su6ngiiediv

23-07-2016
Mathematics

Answered

A test consists of 25 problems and students are told to answer any 15 of these questions. In how many different ways can they choose the 15 questions?

Verified Answer :

23-07-2016

The number of combinations of 25 problems taken 15 at a time is:
\(25C15=\frac{25!}{15!10!}=3,268,760\)

Answer Link

Related Questions

Which of the following would most harm a speechs appeal to ethos

Any three points are coplanar a never b always c occasionally d frequently

A company installs 5000 light bulbs each with an average life of 500 hours standard deviation of 100 hours and distribution approximated by a normal curve Find

Why does warm air rise during convection a Warm air is thicker b Warm air is less dense c Warm air is more dense d Warm air is more humid

The Green Goober a wildly unpopular superhero mixes 3 liters of yellow paint with 5 liters of blue paint to make 8 liters of special green paint for his costume

Yo escribí en el sobre

Ace does various odd jobs over the summer on one of his jobs he was paid 81 for a job he completed in nine hours if he averages the same rate of pay for 26 more

Julia bought pounds of potatoes and pounds of carrots Which expression can be used to find how many pounds of vegetables Julia bought

A sectarian school is run by a the department of education b a religious church or denomination c the state d the parents

how to write an adequate essay

Web Analytics