CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Permutation: n Different Things Taken r at a Time

Find the numb...

Question

Find the number of permutations of n distinct things taken r together, in which 3 particular things must occur together.

Open in App

Solution

First separate the 3 and then arrange the remaining things $^{n - 3} C_{r - 3} (r - 2)! \times 3!$

Suggest Corrections

thumbs-up

0

Similar questions

Q. Find the number of permutations of n distinct things taken r together, in which 3 particular things must occur together.

Q. The number of permutations of

n

distinct objects taken

r

together in which include

3

particular things must occur together

Find the number of permutations of n different things taken r at a time such that two specified things occur together ?

Q. If four times the number of permutations of

n

3

together is equal to five times the number of permutations of

n - 1

3

n

Q. The number of permutations of

n

r

at a time if 3 particular things always occur is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Permutations

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Permutation: n Different Things Taken r at a Time

Standard XII Mathematics

Join BYJU'S Learning Program

CrossIcon