Question

Guyss super urgent- If 10 people A1,A2......A10 give a speech then how many A1 gives speech after A2 and A2 after A3.

Answer 1

Hi friend,
Number of ways in which these 10 people give speech is 10! but for given condition number of ways possible is 10P7 i.e, as A1,A2,A3 give a speech in specified order remaining 7 people can give speech in 10P7 ways=10!/3!=6,04,800.
HOPE THIS HELPS...........

Answer 2

Above condition occurs in 604800 ways.