wiz-icon
MyQuestionIcon
MyQuestionIcon
18
You visited us 18 times! Enjoying our articles? Unlock Full Access!
Question

A person wishes to make up as many different parties as he can out of 20 friends with the condition that each party consists of the same number. How many should he invite at a time?


A

5

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

10

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

15

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

20

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B

10


Since, n = 20 is even, 20Cr is greatest when r=202=10.
Hence, the maximum number of parties 20C10.
Thus he should invite 10 friends at a time in order to form the maximum number of parties.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Why Is Pi So Irrational?
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon