Identify the next term: 1, 3, 6, 10, 15,... ? - Series (Numeric and Alphanumeric) (Reasoning) Solved Question

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Q · Series (Numeric and Alphanumeric)medium · 45s

Identify the next term: 1, 3, 6, 10, 15, ... ?

TopicSeries (Numeric and Alphanumeric)

Question Typemultiple choice

Difficultymedium

Marking+1 / −0.25

Test Duration30 min

Step-by-Step Solution

Every step explained - no skipped algebra.

These are triangular numbers. The next is 6th triangular number: 6×7/2=21.

Final Answer: Option A - 20