Questions
If the number of ways in which n different things can be distributed among n persons so that at least one person does not get any thing is 232. Then n is equal to
detailed solution
Correct option is B
Total number of ways = nnNumber of ways so that each person gets at least one thing (here exactly one thing) = n!Given, nn – n! = 23211−1!=0,22−2!=2,33−3!=21,44−4!=232∴ n=4Similar Questions
The total number of 5-digit numbers of different digits in which the digit in the middle is the largest is
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests