Module ·
Chapter 2: Number & Alphabet Series
Verbal & Analytical
4 topics
What this chapter covers
The 4 topics below make up Number & Alphabet Series in the SSC CGL exam. Click any topic to open its notes, examples and practice test.
Study material & tests
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Notes, worked examples and hint-guided practice for every topic.
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🎯 Topic tests
8 auto-graded questions per topic, pulled from the question bank.
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📝 Chapter test
25 fresh mixed-difficulty questions, timed, with full solutions.
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Formula Reference Sheet
This chapter
Patterns to scan, in order
| Constant difference | +k each term (AP) |
|---|---|
| Constant ratio | ×k each term (GP) |
| Growing difference | +1, +2, +3 … (look at 2nd differences) |
| Squares / cubes | 1,4,9,16 … or 1,8,27,64 … |
| Alternating | two interleaved series |
SSC reference
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