Total places are 9, in which 5 are odd and 4 are even like 1 2 3 4 5 6 7 8 9. 5 men will occupy 5 odd places in $\,{}^{5}P_{5}$ = 5! ways 4 women will occupy 4 even places in $\,{}^{4}P_{4}$ = 4! ways ∴ Required no. of ways = 5! × 4! = 2880.