Series (Number, Letter, Symbol)

A series is a continuous sequence of numbers, letters, or words that are obtained by some particular rule. Your task is to apply this rule to find the missing term or the wrong term in the series.

Number series questions are based on specific mathematical operations.

Common Patterns:

• Difference Series: The difference between consecutive terms is constant, increasing, or decreasing (e.g., 2, 5, 8, 11... [+3]).
• Product/Division Series: Terms are obtained by multiplying or dividing the previous term by a specific number (e.g., 3, 6, 12, 24... [x2]).
• Square/Cube Series: Series based on squares (n²) or cubes (n³) of numbers (e.g., 1, 4, 9, 16... [n²]).
• Combination Series: A mix of operations, like (x2 + 1) or (x3 - 2).
• Prime Number Series: A series of prime numbers in order (e.g., 2, 3, 5, 7, 11...).

Letter series involve patterns in the English alphabet.

Key Concepts:

• Positional Variation: Skipping a fixed or increasing number of letters between terms (e.g., A, C, E, G... [+2]).
• Reverse Order: Series logic based on reverse alphabetical order (Z to A).
• Continuous Pattern Series: A sequence of small letters where a group of letters is repeated (e.g., ab_ab_ab).
• Opposite Letters: Pairs like A-Z, B-Y, C-X.

In symbol series, figures change step-by-step following a specific rule.

Look for:

• Rotation: Clockwise or anti-clockwise movement of symbols.
• Position Change: Symbols shifting positions in a regular pattern.
• Replacement: New symbols replacing old ones at specific steps.