MyQuestionIcon

1

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

Permutation under Restriction

Find the numb...

Question

Find the number of permutations of 7 objects, taken 3 at a time.

Open in App

Solution

Number of permutations of 7 objects, taken 3 at a time

= $^{7} P_{3} = 7 \times 6 \times 5$ [ up to three terms ]

= 210.

Suggest Corrections

thumbs-up

9

Similar questions

Q. The number of permutations of 'n' different objects taken 'r' at a time is given by

The number of permutations of n different objects taken r at a time, where repetition is allowed

Q. If there are three objects, then the number of permutations of these objects taken two at a time is 8.

Q. The number of permutations of

n

r

at a time is determined by the following formula:

Q. The number of permutations of n distinct objects, taken r at a time, when repetitions are allowed, is __________.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Permutations

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Permutation under Restriction

Standard XII Mathematics

Join BYJU'S Learning Program

CrossIcon