CAT 2020 Progression Question (Medium)

Question

Find the missing number in the series 11, 12, 17, 30, 59, ?

Optima Learn · Accepted Answer

The first differences of this series follow a simple recursive doubling-plus-constant rule. Understanding the Series The first differences are 1, 5, 13, 29 each difference equals the previous difference x 2 3 1x2 3 5, 5x2 3 13, 13x2 3 29 . Analyzing the Calculation The next difference 29 x 2 3 61, s

CAT 2020 Progression — Previous Year Question

CAT 2020

Quantitative

Progression

Medium

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