Tips & Tricks Given series: C4Z, H6V, M10R, R16N, ? The logic followed here is, ⇒ C + 5 = H; H + 5 = M; M + 5 = R; R + 5 = W ⇒ 4 + 2 = 6; 6 + 4 = 10; 10 + 6 = 16; 16 + 8 = 24 ⇒ Z – 4 = V; V – 4 = R; R – 4 = N; N – 4 = J Hence, W24J will be the next term.