CAT Number Theory questions with solutions
20 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.
- #183Three-Digit Numbers Increasing on ReversalQATITAHard
- #228Integers not divisible by 2, 5, or 7QAMCQHard
- #237Three digit numbers with repeated digitsQATITAEasy
- #247Ordered pairs of factorsQAMCQHard
- #274Product of digits of 3-digit numbersQATITAMedium
- #282Power of x expressionQAMCQHard
- #293Smallest possible value of a + b + cQAMCQMedium
- #347Real numbers satisfying system of equationsQAMCQHard
- #350Number of perfect square factors greater than 1QATITAMedium
- #366Pairs satisfying difference of squaresQATITAMedium
- #370Six-digit number conditionQATITAMedium
- #390Difference of Cubes RatioQAMCQMedium
- #510Minimizing Sum of Squares of FactorsQATITAEasy
- #514Ascending Order Numbers FormationQATITAHard
- #521Powers of Two DivisibilityQATITAHard
- #5583x3 Magic Square Grid EntryQATITAEasy
- #578Sum of Squares of Consecutive IntegersQAMCQHard
- #585Positive Integer Solutions to Reciprocal EquationQATITAHard
- #1297Highest possible 4-digit numberQATITAMedium
- #1300Number of integer values of expressionQATITAHard