Preparation guide
BYJU'S Aptitude Questions
Overview
This page has BYJU’S aptitude questions with full solutions - numerical ability, verbal, and logical reasoning - in the style students report for the BYJU’S Online Assessment. Start with the timed mock quiz, then work the solved set and log every miss by topic.
BYJU'S 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
Reasoning
Find the missing number: 3, 9, 27, 81, ?
Each ×3 → 243.
Quantitative
The average of 5 numbers is 25. If one number is excluded, the average becomes 23. Find the excluded number.
Sum of 5 numbers = 5 × 25 = 125 Sum of 4 numbers = 4 × 23 = 92 Excluded number = 125 - 92 = 33
Quantitative
A 120 m train crosses a pole in 8 s. Speed in km/h is:
Speed = 120/8 = 15 m/s = 54 km/h.
Verbal
The new policy will _____ significant changes in the organization.
Correct answer: affect
Reasoning
If P means +, Q means −, R means ×, then 18 R 2 P 6 Q 4 = ?
18 × 2 + 6 − 4 = 36 + 6 − 4 = 38.
Reasoning
Pointing to a photograph, Ravi said, "He is the son of my grandfather's only son." The boy is Ravi's:
Grandfather's only son is Ravi's father → the boy is Ravi's brother.
Quantitative
If 3x + 5 = 20, then x equals:
3x = 15 → x = 5.
Reasoning
If BOOK is coded as 43 (sum of letter positions), PEN is coded as:
P+E+N = 16+5+14 = 35.
Quantitative
Find the compound interest on ₹8000 for 3 years at 5% per annum, compounded annually.
Correct answer: ₹1261
Verbal
Synonym of "Abundant":
Abundant means plentiful.
Quantitative
A shopkeeper offers two successive discounts of 20% and 15%. What is the effective discount percentage?
Correct answer: 32%
Reasoning
Find the next number: 3, 9, 27, 81, ?
×3 each → 243.
Verbal
Antonym of "Optimistic":
Optimistic ↔ pessimistic.
Verbal
The idiom "once in a blue moon" means:
It means something that happens very rarely.
Quantitative
Present value of $10,000 received after 2 years at 10% discount rate?
Correct answer: 10000 / (1.1)² = $8,264.46
Your score
0/15(0%)
Review
BYJU’S 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
Q1: Partnership share
Problem: A and B invest ₹40,000 and ₹60,000. If profit is ₹25,000, what is A’s share?
Solution: Ratio A:B = 2:3. A’s share = (2/5) × 25000 = ₹10,000.
Answer: ₹10,000
Q2: Chain rule copies
Problem: 8 printers print 800 pages in 4 hours. How many printers for 1200 pages in 3 hours?
Solution: Pages ∝ printers × time. 800/(8×4)=1200/(p×3) → 25 = 1200/(3p) → 75p=1200 → p=16.
Answer: 16
Q3: CI vs SI hint
Problem: Find compound interest on ₹10,000 at 10% per annum for 2 years, compounded annually.
Solution: Amount = 10000 × (1.1)² = 10000 × 1.21 = ₹12,100. CI = 12100 − 10000 = ₹2100. (SI for same period would be ₹2000; the extra ₹100 is interest on first-year interest.)
Answer: ₹2100
Q4: Speed convert
Problem: Convert 18 m/s to km/h.
Solution: Multiply by 18/5: 18 × 18/5 = 64.8 km/h.
Answer: 64.8 km/h
Q5: Compound ratio
Problem: If two ratios are 3:5 and 5:7, what is the compound ratio?
Solution: Compound ratio = (3/5) × (5/7) = 3/7, written as 3:7.
Answer: 3:7
Q6: Calendar day
Problem: If 1 January is a Friday, what day is 1 March of a non-leap year?
Solution: Jan 31 + Feb 28 = 59 days = 8 weeks + 3 days. Friday + 3 = Monday.
Answer: Monday
Q7: Compound mark-discount
Problem: An article is marked 40% above cost and sold after a 10% discount. Find the profit percent.
Solution: SP = CP × 1.4 × 0.9 = 1.26 CP. Profit = 26%.
Answer: 26%
Q8: Algebra ages
Problem: Father is 3 times as old as son. After 12 years he will be twice as old. Son’s present age?
Solution: 3x + 12 = 2(x + 12) → 3x + 12 = 2x + 24 → x = 12.
Answer: 12 years
Q9: Series n(n+1)
Problem: Find the next term: 2, 6, 12, 20, 30, ?
Solution: Pattern: 1×2, 2×3, 3×4, 4×5, 5×6, 6×7. Next = 6 × 7 = 42.
Answer: 42
Q10: CI half yearly
Problem: CI on ₹8000 at 10% p.a. for 1 year compounded half-yearly?
Solution: Rate per half-year = 5%. Amount = 8000 × (1.05)² = 8000 × 1.1025 = 8820. CI = 820.
Answer: ₹820
Verbal ability questions
Q11: Spelling
Problem: Which spelling is correct: Acommodate / Accommodate / Acomodate / Accomodate?
Solution: Correct spelling has two c’s and two m’s: Accommodate.
Answer: Accommodate
Q12: Synonym - candid
Problem: Choose the best synonym of ‘candid’.
Solution: ‘Candid’ means frank or straightforward. Closest: frank.
Answer: Frank
Q13: Idiom - piece of cake
Problem: What does ‘a piece of cake’ mean?
Solution: It means something very easy.
Answer: Very easy
Q14: One word - bibliophile
Problem: A person who loves books is called a?
Solution: Bibliophile.
Answer: Bibliophile
Q15: Sentence rearrange
Problem: Arrange: (1) the exam (2) she cleared (3) with ease
Solution: She cleared the exam with ease.
Answer: 2-1-3
Q16: Synonym - abundant
Problem: Choose the best synonym of ‘abundant’.
Solution: ‘Abundant’ means present in large quantity. Closest match: plentiful.
Answer: Plentiful
Reasoning ability questions
Q17: Syllogism some
Problem: All pens are books. Some books are desks. Conclusion: Some pens are desks?
Solution: No forced overlap between pens and desks. Does not follow.
Answer: Does not follow
Q18: Seating circular
Problem: Four people sit around a square table facing center. A sits opposite C. If B is left of A, who is right of C?
Solution: Opposite pairs A-C. B left of A means clockwise B. Right of C is B.
Answer: B
Q19: 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
Q20: Odd one shapes
Problem: Odd one out: Circle, Square, Triangle, Cube
Solution: Cube is 3D; others are 2D shapes.
Answer: Cube
Q21: Statement assumption
Problem: Statement: Use public transport to reduce pollution. Assumption: Public transport causes less pollution than private vehicles.
Solution: The advice assumes public transport is cleaner. Assumption is implicit.
Answer: Implicit / valid
Q22: Matrix letter
Problem: If in a code A=1, B=2, … Z=26, what is the value of CAB?
Solution: C=3, A=1, B=2; sum = 6 (if additive coding).
Answer: 6
Timed practice tips for BYJU’S
- 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