Chartered Accountant
14245 Points
Posted on 01 February 2011
Let us make the English man sit in alternative way on a round table so 4 English man can sit on a round table in (4-1) ! = 3 ! = 6 ways
Now four Americans man can sit in 4P4 i.e. 4! = 4*3*2*1 = 24 ways
so the total number of ways = 24*6 = 144 ways