The carbon atoms of $\mathrm{CH}{}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{C}\equiv \mathrm{CH}$ are numbered 1 to 5 from the left. Their hybridisation states, in order, are

Hybridisation follows the number of sigma bonds plus lone pairs. C1 has four single bonds ($s{p}^3$), C2 and C3 each carry a double bond ($s{p}^2$), and C4 and C5 each carry a triple bond ($sp$). The order is $s{p}^3,s{p}^2,s{p}^2,sp,sp$.