Aspire Faculty ID #11104 · Topic: DU MCA 2021 · Just now
DU MCA 2021

What is the next term in the series 6, 20, 42, 72, 110, ... is
(a) 156
(b) 210
(c) 110
(d) 119

Solution

Given series: $6,\,20,\,42,\,72,\,110,\,\_\_$

First differences: $14,\,22,\,30,\,38$

Second differences: $8,\,8,\,8$ (constant)

Next first difference $= 38 + 8 = 46$

Next term $= 110 + 46 = 156$

Answer: $\boxed{156}$ ✅

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