Mathematical Ability (quantitative aptitude) carries 10 questions in 35 minutes — the most generous time allocation in the Infosys test. That is deliberate: the questions are multi-step, and Infosys wants accuracy, not speed. A good target is 8+ correct.
Most-tested aptitude topics
- Time & Work (including alternate-day and assisted-work setups)
- Mixtures & Alligation, Ratio & Proportion
- Problems on Ages
- Speed–Time–Distance, Trains, Boats & Streams
- Simple & Compound Interest
- Profit & Loss (false weights are a favourite)
- Permutation & Combination, Probability
- Averages and basic Data Interpretation
Practice Infosys aptitude questions
These questions are taken from memory-based Infosys papers. Click an option to check your answer and see the full working.
A can complete a work in 20 days, B in 30 days, and C in 60 days. In how many days will the work be completed if A works continuously and is assisted by B and C on every 4th day?
In a mixture of 60 litres, the ratio of milk and water is 2:1. If this ratio needs to become 1:2, what quantity of water must be added?
How many 3-digit numbers can be formed from the digits 2, 3, 4, 5, 6, 7 and 9 (without repetition) which are divisible by 5?
Tip: with 3.5 minutes per question, always sanity-check your answer against the options before moving on — Infosys distractors are built from the most common miscalculations.
Continue with Logical Reasoning questions or test yourself with a full placement paper.