Prep guide
Plan
Siemens Aptitude Questions
Overview
Section titled “Overview”This page has Siemens aptitude questions with full solutions - numerical ability, verbal, and logical reasoning - in the style students report for the Siemens Online Test. Start with the timed mock quiz, then work the solved set and log every miss by topic.
Siemens Aptitude Mock Quiz
Timed placement-style MCQs with score and explanations after you submit. Use it to check speed and accuracy before the real test.
Questions15
Time10 min
Quantitative
The sum of ages of 5 children born at intervals of 3 years is 50 years. Find the age of the youngest child.
Let youngest child's age = x Ages: x, x+3, x+6, x+9, x+12 Sum = 5x + 30 = 50 5x = 20 x = 4 years
Reasoning
If every letter is shifted +2 in the alphabet, BAT becomes:
Each letter +2 → DCV.
Quantitative
If 20% of a number is 48, the number is:
Number = 48 × 100/20 = 240.
Verbal
Choose the correctly spelled word:
Correct spelling is Accommodation.
Quantitative
The average of 5 numbers is 42. If one number 32 is removed, the new average is:
Sum = 210. New sum = 178. Average = 178/4 = 44.5.
Reasoning
Statements: All dogs are animals. Some animals are pets. Conclusion: Some dogs are pets.
No definite relation that dogs are pets.
Verbal
A shopkeeper buys an article for ₹500 and sells it for ₹600. Find his profit percentage.
Correct answer: 20%
Quantitative
A person sells a pen at a 25% profit. If the cost price is ₹40, what is the selling price?
Profit = 25% of ₹40 = ₹10 Selling Price = Cost Price + Profit = ₹40 + ₹10 = ₹50
Verbal
Problem: Find the synonym of "ABUNDANT": a) Scarce b) Plentiful c) Limited d) Rare
Abundant means existing in large quantities, so "Plentiful" is the synonym.
Reasoning
Letter Series - BXJ, ETL, HPN, KLP, ?
Correct answer: MHR
Quantitative
The price of a product increased by 20%. By what percentage should consumption be reduced to keep expenditure same?
Let original price = ₹100, consumption = 100 units New price = ₹120 Original expenditure = ₹10,000 New consumption = 10,000 / 120 = 83.33 units Reduction = (100 - 83.33) / 100 × 100 = 16.67%
Reasoning
Find the missing number: 2, 6, 12, 20, 30, ?
Pattern: Differences are 4, 6, 8, 10 (increasing by 2) Next difference = 12 Next number = 30 + 12 = 42
Reasoning
A is taller than B but shorter than C. D is shorter than B. Who is tallest?
C > A > B > D → C is tallest.
Quantitative
Find the compound interest on ₹5000 for 2 years at 10% per annum, compounded annually.
Correct answer: ₹1050
Verbal
Antonym of "Artificial":
Artificial ↔ natural.
Your score
0/15(0%)
Review
Siemens aptitude topics students usually practice
Section titled “Siemens aptitude topics students usually practice”- Numerical / quantitative: percentages, profit and loss, ratios, time and work, averages, SI/CI, speed-distance
- Logical reasoning: series, coding-decoding, blood relations, seating, syllogisms
- Verbal ability: grammar, vocabulary, error spotting, idioms
Numerical ability questions
Section titled “Numerical ability questions”Q1: Work efficiency
Problem: A is twice as efficient as B. Together they finish in 12 days. How many days does A alone need?
Solution: Let B = x days, A = x/2. 1/(x/2) + 1/x = 1/12 → 2/x + 1/x = 1/12 → 3/x = 1/12 → x = 36. A alone = 18 days.
Answer: 18 days
Q2: Fraction simplify
Problem: Simplify: (3/4) ÷ (9/8) × (2/3).
Solution: (3/4) × (8/9) × (2/3) = (3×8×2)/(4×9×3) = 48/108 = 4/9.
Answer: 4/9
Q3: Age ratio
Problem: The ratio of ages of A and B is 3:5. After 8 years the ratio becomes 5:7. Find A’s present age.
Solution: Let ages be 3x and 5x. (3x+8)/(5x+8) = 5/7 7(3x+8) = 5(5x+8) 21x + 56 = 25x + 40 4x = 16 → x = 4 A’s age = 12 years.
Answer: 12 years
Q4: Boat upstream
Problem: A boat’s speed in still water is 15 km/h and the stream is 3 km/h. How long to cover 36 km upstream?
Solution: Upstream speed = 15 − 3 = 12 km/h. Time = 36 / 12 = 3 hours.
Answer: 3 hours
Q5: Man days leftover
Problem: 15 men can do a job in 20 days. After 5 days, 5 men leave. How many more days to finish?
Solution: Work done in 5 days = 15×5 = 75 man-days. Total = 300. Left = 225. Remaining men = 10. Days = 225/10 = 22.5 days.
Answer: 22.5 days
Q6: Remainder theorem style
Problem: Find remainder when 7^3 is divided by 5.
Solution: 343 ÷ 5: 5×68=340, remainder 3. Or 7≡2 mod 5; 2³=8≡3.
Answer: 3
Q7: Average after replace
Problem: The average of five numbers is 20. One number 30 is replaced by 10. What is the new average?
Solution: Old sum = 5 × 20 = 100. New sum = 100 − 30 + 10 = 80. New average = 80 / 5 = 16.
Answer: 16
Q8: Permutation basic
Problem: In how many ways can 5 different books be arranged on a shelf?
Solution: Arrangements of 5 distinct items = 5! = 120.
Answer: 120
Q9: Square garden path
Problem: A square park of side 40 m has a 2 m wide path outside. Area of the path?
Solution: Outer side = 44. Outer area = 1936. Inner = 1600. Path = 336 m².
Answer: 336 m²
Q10: Train and pole
Problem: A train 150 meters long passes a pole in 15 seconds. What is its speed in km/h?
Solution: Distance = 150 m = 0.15 km. Time = 15 s = 15/3600 h = 1/240 h. Speed = 0.15 ÷ (1/240) = 0.15 × 240 = 36 km/h.
Faster check: 150/15 = 10 m/s → 10 × 18/5 = 36 km/h.
Answer: 36 km/h
Verbal ability questions
Section titled “Verbal ability questions”Q11: Synonym - abundant
Problem: Choose the best synonym of ‘abundant’.
Solution: ‘Abundant’ means present in large quantity. Closest match: plentiful.
Answer: Plentiful
Q12: Synonym - candid
Problem: Choose the best synonym of ‘candid’.
Solution: ‘Candid’ means frank or straightforward. Closest: frank.
Answer: Frank
Q13: One word - bibliophile
Problem: A person who loves books is called a?
Solution: Bibliophile.
Answer: Bibliophile
Q14: Synonym - mitigate
Problem: Choose the best synonym of ‘mitigate’.
Solution: ‘Mitigate’ means to make less severe. Closest match: alleviate.
Answer: Alleviate
Q15: Antonym - benevolent
Problem: Choose the best antonym of ‘benevolent’.
Solution: ‘Benevolent’ means kind or well-meaning. Opposite: malevolent.
Answer: Malevolent
Q16: Fill in the blank
Problem: She _____ to the office every day by metro. (go / goes / going / gone)
Solution: Third-person singular present needs ‘goes’.
Answer: goes
Reasoning ability questions
Section titled “Reasoning ability questions”Q17: Venn conclusion
Problem: Some doctors are teachers. All teachers are writers. Conclusion: Some doctors are writers?
Solution: Some doctors who are teachers must be writers. Follows.
Answer: Follows
Q18: Blood uncle
Problem: A is B’s brother. C is A’s mother. D is C’s father. How is B related to D?
Solution: D is C’s father; C is mother of A and B. B is D’s grandchild.
Answer: Grandchild
Q19: Odd one out
Problem: Find the odd one out: 3, 5, 7, 9, 11
Solution: 3, 5, 7, and 11 are prime. 9 = 3×3 is composite, so it is the odd one out.
Answer: 9
Q20: Analogy tool
Problem: Hammer is to Nail as Pen is to ?
Solution: Hammer drives nail; pen writes (on paper/ink). Best: Paper / Writing.
Answer: Paper
Q21: Direction turn
Problem: A person walks 5 km north, then 3 km east, then 5 km south. How far is he from the start, and in which direction?
Solution: North 5 and south 5 cancel. He is 3 km east of the start.
Answer: 3 km east
Q22: Puzzle order
Problem: P finishes before Q but after R. S finishes after Q. Who finished first?
Solution: Order: R, P, Q, S. First is R.
Answer: R
Timed practice tips for Siemens
Section titled “Timed practice tips for Siemens”- First pass: only high-confidence questions
- Mark and skip time sinks early
- Keep verbal accuracy high - these are easy marks if you stay calm
- Run the mock quiz at least three times a week under real timing
- Sleep properly the night before; fatigue hurts DI and calculation accuracy