Number Series Questions for ADRE Grade IV 2027
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Number/Letter Series — Quick Overview
Find the pattern and the missing term. 3-4 questions. Most common in ADRE reasoning.
Key Formula
Check: Arithmetic (+n), Geometric (×n), Squares (1,4,9,16), Primes (2,3,5,7,11)
Exam Tip
Find differences between consecutive terms first. If differences form a pattern, it's arithmetic.
Common Trap
Some series have alternating patterns (odd/even positions follow different rules).