I tried it by selecting 2 men out of 8 for bow side,and then arrange them in 2! ways.This can be done in$ \binom{8}{2}$*2! ways,and the stroke side can be crewed in 6 ways.So the required no. of ways are $\binom{8}{2}$*2!*6=336.
But,my answer is not matching.It's correct answer is 5760.
Please help me in pointing out my mistake.
Best Answer
See we don't want to select people we want to arrange people. Hence total ways are $^4P_2\times$$^4P_1\times$$^5P_5=5760$ assuming boat has 4 rowing on each side.