In the twoslit experiment for the condition of dark fringes

In the two-slit experiment, for the condition of dark fringes, the value of m = +2 corresponds to a path difference of 3/2. True or False?

Solution

condition for destructive interrfernce is (m+1/2) L

so if m=2

condition is (2+1/2) = 5L/2

so flase it is