Aptitude
Drills
ABB placement papers 2025
Overview
Section titled “Overview”ABB placement papers 2025. Primary filter: ABB Online Test. Focus: Aptitude, electrical/automation basics, coding.
ABB 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
A can complete a work in 12 days, B in 15 days, and C in 20 days. If they work together, in how many days will they complete the work?
Let total work = LCM of 12, 15, 20 = 60 units A's efficiency = 60/12 = 5 units/day B's efficiency = 60/15 = 4 units/day C's efficiency = 60/20 = 3 units/day Combined efficiency = 5 + 4 + 3 = 12 units/day Time taken = 60/12 = 5 days
Quantitative
If all roses are flowers, and some flowers are red, which must be true?
From "all roses are flowers" and "some flowers are red", we cannot conclude about roses being red. But "some red things are flowers" must be true.
Quantitative
Convert to passive voice: "The teacher explained the lesson."
Passive voice: "The lesson was explained by the teacher."
Reasoning
Statements: 1) Some boxes are cars, 2) Some cars are roads Conclusions: I) Some roads are boxes, II) Some cars are boxes, III) No box is a road, IV) Some roads are cars.
Correct answer: Only II and IV follow
Verbal
Antonym of "Optimistic":
Optimistic ↔ pessimistic.
Quantitative
Select 3 people from 10 for a committee. How many ways?
Correct answer: C(10,3) = 10!/(3!×7!) = 120
Quantitative
The average age of a class of 30 students is 20 years. If the teacher's age is included, the average becomes 21 years. Find the teacher's age.
Correct answer: 51 years
Verbal
Problem: "She is allergic _____ peanuts." a) to b) from c) with d) by
"Allergic to" is the correct prepositional phrase.
Reasoning
Odd one out: 8, 27, 64, 100, 125
Others are perfect cubes; 100 is not.
Reasoning
Find the next number: 2, 5, 11, 23, 47, ?
Pattern: Each number = previous × 2 + 1 2×2+1=5, 5×2+1=11, 11×2+1=23, 23×2+1=47 Next: 47×2+1 = 95
Verbal
Antonym of "Benevolent":
Benevolent ↔ malevolent.
Verbal
Find the synonym of "Benevolent".
Correct answer: Kind
Quantitative
A team can process loan applications in 10 days. Another team can do it in 15 days. How long if they work together?
Correct answer: 6 days
Reasoning
Find the next number: 1, 8, 27, 64, 125, ?
Correct answer: 216
Reasoning
If every letter is shifted +2 in the alphabet, CODE becomes:
Each letter +2 → EQFG.
Your score
0/15(0%)
Review
Sample ABB Questions with Solutions
Section titled “Sample ABB Questions with Solutions”Practice-style questions (not leaked live papers).
Aptitude / Reasoning
Section titled “Aptitude / Reasoning”Q1: CP Rs.500, SP Rs.600. Profit percent?
Answer: 20%
Explanation: (100/500)*100=20%.
Q2: Find next: 2, 6, 12, 20, 30, ?
Answer: 42
Explanation: n(n+1) pattern.
Q3: A train 120 m long runs at 54 km/h. Time to pass a pole?
Answer: 8 seconds
Explanation: 54 km/h = 15 m/s; t = 120/15 = 8 s.
Q4: Ratio of ages A:B = 4:5. After 6 years = 6:7. A present age?
Answer: 12 years
Explanation: 4x+6 / 5x+6 = 6/7 => x=3 => A=12.
Q5: Simple interest on Rs.8000 at 10% for 2 years?
Answer: Rs.1600
Explanation: SI = PRT/100 = 1600.
Q6: If 30% of x = 150, x = ?
Answer: 500
Explanation: 0.3x=150 => x=500.
Q7: Average of 5 numbers is 20. One number 30 replaced by 10. New average?
Answer: 16
Explanation: Sum 100 -> 80; avg 16.
Q8: A finishes in 10 days, B in 15. Together?
Answer: 6 days
Explanation: 1/10+1/15=1/6.
Coding Practice
Section titled “Coding Practice”Coding Q1: Two Sum
Approach: Hash map complements.
Complexity: O(n)
ABB tip: Narrate brute force then optimize then edge cases before coding.
Coding Q2: Longest substring without repeat
Approach: Sliding window + last index.
Complexity: O(n)
ABB tip: Narrate brute force then optimize then edge cases before coding.
Coding Q3: Merge intervals
Approach: Sort + merge.
Complexity: O(n log n)
ABB tip: Narrate brute force then optimize then edge cases before coding.
Coding Q4: Top K frequent
Approach: Count + heap.
Complexity: O(n log k)
ABB tip: Narrate brute force then optimize then edge cases before coding.
Coding Q5: Linked list cycle
Approach: Floyd tortoise-hare.
Complexity: O(1) space
ABB tip: Narrate brute force then optimize then edge cases before coding.
Coding Q6: Level order traversal
Approach: BFS queue.
Complexity: O(n)
ABB tip: Narrate brute force then optimize then edge cases before coding.
Coding Q7: Coin change min coins
Approach: DP unbounded.
Complexity: O(amount*coins)
ABB tip: Narrate brute force then optimize then edge cases before coding.
Coding Q8: Binary search
Approach: Lo/hi mid.
Complexity: O(log n)
ABB tip: Narrate brute force then optimize then edge cases before coding.
Coding Q9: Kadane max subarray
Approach: Running best.
Complexity: O(n)
ABB tip: Narrate brute force then optimize then edge cases before coding.
Coding Q10: Reverse a string in-place
Approach: Two pointers from ends.
Complexity: O(n)/O(1)
ABB tip: Narrate brute force then optimize then edge cases before coding.
Deep Prep Notes for ABB
Section titled “Deep Prep Notes for ABB”How the ABB Online Test Usually Feels
Section titled “How the ABB Online Test Usually Feels”Candidates describe a paced filter where easy marks disappear if you over-invest in one hard item. For ABB, start with a three-minute scan, mark certainty levels, and protect accuracy. Languages typically include C, C++, Python, IEC languages (role).
Topic Weight Hints (Candidate-Reported)
Section titled “Topic Weight Hints (Candidate-Reported)”| Area | Why it matters at ABB |
|---|---|
| Aptitude | Primary shortlist signal |
| Core CS (OOPs/DBMS/OS) | Technical interview depth |
| Electrification, Automation, Robotics awareness | Managerial / HR differentiation |
| Communication | Especially for consulting and client-facing GSIs |
14-Day Sprint
Section titled “14-Day Sprint”- Days 1-3: pattern familiarization + 2 sectional mocks
- Days 4-7: weak-topic closed practice
- Days 8-10: full mocks every other day
- Days 11-14: interview narration + light revision
Related
Section titled “Related”Coding
DSA
OA
Assessment
Hub
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