Question 672505
The 4 people can be chosen from the group of 10 in 10C4 ways = 

10*9*8*7/(4*3*2*1) = 210 ways

  Since it's a circular arrangement, Each of the 210 different choices of 4 people can be arranged in (4-1)! ways

Everyone has the same immediate left and immediate right neighbour means the clockwise and anticlockwise arrangement are not same.



So, total number of ways = 210*3! = 210*6 = 1260 ways