A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
18, 28, 60, ?, 493The relation among given numbers are:
18 × 1.5 + 12 = 27 + 1 = 28;
28 × 2 + 22 = 56 + 4 = 60;
60 × 2.5 + 32 = 150 + 9 = 159;
159 × 3 + 42 = 477 + 16 = 493
Hence, “159” is the missing term.