# Number and Letter Series

Subject: Logical Reasoning    Exam: CAT

Chapter Rating: Should Do

Topic Weightage: 0.06

QUANT & REASONING PRACTICE TESTS FOR BANK/SSC EXAMS

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## Important Points

Solve for at least 3 terms first before you are sure of the involved pattern. A pattern is usually a mathematical operation on first term to give second term.
If the series is increasing or decreasing with a small increase there must be addition or subtraction involved.
If the series is increasing or decreasing with a large increase there must be multiplication or division involved.
If the series is increasing or decreasing with a very large increase there must be square and cubes involved.
If the series is not linearly increasing and a pattern is not formed after solving for 3 terms then there is likely a combination of series, numbers at odd position form one series and even position form another series. Solve for 4 terms before you are sure.

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