Grade 12Algebra
A party of 23 persons take their seats at a round table. The odds against two persons sitting together are :
1 Answer
bharat bajaj
Cases for two persons sitting together = 21! X 2!
Total cases = 22 !
Cases for the persons not sitting together = 22! - 21! X 2! = 21 ! ( 22-2) = 21! X 20
Odds against = 21! X 20 / 21! X 2 = 10:1
Cases for the persons not sitting together = 22! - 21! X 2! = 21 ! ( 22-2) = 21! X 20
Odds against = 21! X 20 / 21! X 2 = 10:1
Thanks & Regards
Bharat Bajaj
askIITians Faculty
IIT Delhi
IIT Delhi
Other Related Questions on algebra
How do you write “the product of 18 and q” as an algebraic expression?
How do you write “the product of 18 and q” as an algebraic expression?
algebra
Last Activity: 2 Years ago