How many groups of 6 persons can be formed from 8 men and 7 women ?

Total number of person = 8 men + 7 women = 15
No. of groups can be formed of 6 persons = ¹⁵C₆
= 15! /{6! (15 – 6)!}
= 15! /(6! 9!)
= (15 x 14 x 13 x 12 x 11 x 10)/(6 x 5 x 4 x 3 x 2 x 1)
= 5005