CAT Number Theory questions with solutions
18 previous year CAT questions on Number Theory, taken from the QA section, each with the correct answer and a full explanation. Work through them in order or jump to a specific paper.
XAT 2023 CAT 2021 Slot 2CAT 2020 Slot 1CAT 2020 Slot 3CAT 2019 Slot 1CAT 2017 Slot 2XAT 2013 XAT 2011
- #183Three-Digit Numbers Increasing on ReversalCATQATITAHard
- #247Ordered pairs of factorsCATQAMCQHard
- #274Product of digits of 3-digit numbersCATQATITAMedium
- #282Power of x expressionCATQAMCQHard
- #293Smallest possible value of a + b + cCATQAMCQMedium
- #510Minimizing Sum of Squares of FactorsCATQATITAEasy
- #514Ascending Order Numbers FormationCATQATITAHard
- #521Powers of Two DivisibilityCATQATITAHard
- #5583x3 Magic Square Grid EntryCATQATITAEasy
- #578Sum of Squares of Consecutive IntegersCATQAMCQHard
- #585Positive Integer Solutions to Reciprocal EquationCATQATITAHard
- #1297Highest possible 4-digit numberCATQATITAMedium
- #1300Number of integer values of expressionCATQATITAHard
- #1348Integer Solutions to Prime EquationXATQADIMCQHard
- #1970Interesting Numbers PropertyXATQADIMCQHard
- #1982Evaluating Mathematical StatementsXATQADIMCQHard
- #2111Number Theory: Repunit Numbers Prime CheckXATQADIMCQMedium
- #2131Number Theory: Quiz Marks AveragesXATQADIMCQMedium