Prep Guide
Plan
Optum aptitude questions
Overview
Section titled “Overview”Practice Optum aptitude questions for Optum Online Assessment.
Optum 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
All pens are books. Some books are papers. Conclusion: Some pens are papers.
No definite overlap between pens and papers.
Quantitative
A person covers a certain distance at a speed of 50 km/h and returns at 30 km/h. What is the average speed for the entire journey?
Let distance = D km Time forward = D/50 hours Time return = D/30 hours Total time = D/50 + D/30 = D(3+5)/150 = 8D/150 = 4D/75 hours Total distance = 2D km Average speed = 2D / (4D/75) = 2D × 75/4D = 37.5 km/h
Quantitative
The price of a product is increased by 25%. By what percentage should the consumption be reduced so that the expenditure remains the same?
Correct answer: 20%
Verbal
Problem: Choose the synonym for "Ephemeral": a) Eternal b) Transient c) Permanent d) Perpetual
"Ephemeral" means lasting for a very short time, temporary. "Transient" has the same meaning.
Reasoning
In a row of 30 students, A is 10th from the left. Rank from the right is:
From right = 30-10+1 = 21.
Reasoning
In how many ways can 4 books be arranged on a shelf?
Correct answer: 24 ways
Quantitative
Select 3 people from 10 for a committee. How many ways?
Correct answer: C(10,3) = 10!/(3!×7!) = 120
Reasoning
Find the next number: 2, 6, 12, 20, 30, ?
Differences +4, +6, +8, +10, +12 → next is 42.
Verbal
Find the synonym of "Benevolent".
Correct answer: Kind
Quantitative
Compound Interest - Yearly vs Half-Yearly
Correct answer: ₹3.93 (approximately)
Verbal
Choose the correctly spelled word:
Correct spelling is Accommodation.
Verbal
Neither the teacher nor the students _____ present.
Verb agrees with nearer subject (students) → were.
Reasoning
Find the missing number: 5, 11, 23, 47, 95, ?
Correct answer: 191
Quantitative
The ratio of boys to girls in a class is 3:2. If there are 30 students, how many are girls?
Correct answer: 12 girls
Quantitative
If "ACCENTURE" is coded as "ERUTNECCA", how is "SYSTEM" coded?
Pattern: Letters are reversed ACCENTURE → ERUTNECCA (reversed) SYSTEM → METSYS (reversed)
Your score
0/15(0%)
Review
Question 1
Section titled “Question 1”If 30% of x = 150, x = ?
Answer: 500
Explanation: 0.3x=150 => x=500.
Question 2
Section titled “Question 2”Average of 5 numbers is 20. One number 30 replaced by 10. New average?
Answer: 16
Explanation: Sum 100 -> 80; avg 16.
Question 3
Section titled “Question 3”A finishes in 10 days, B in 15. Together?
Answer: 6 days
Explanation: 1/10+1/15=1/6.
Question 4
Section titled “Question 4”Probability of drawing an ace from a deck?
Answer: 1/13
Explanation: 4/52=1/13.
Question 5
Section titled “Question 5”Pipe A fills in 6h, B in 8h. Together to fill?
Answer: 24/7 hours
Explanation: 1/6+1/8=7/24.
Question 6
Section titled “Question 6”CP Rs.500, SP Rs.600. Profit percent?
Answer: 20%
Explanation: (100/500)*100=20%.
Question 7
Section titled “Question 7”Find next: 2, 6, 12, 20, 30, ?
Answer: 42
Explanation: n(n+1) pattern.
Question 8
Section titled “Question 8”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.
Question 9
Section titled “Question 9”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.
Question 10
Section titled “Question 10”Simple interest on Rs.8000 at 10% for 2 years?
Answer: Rs.1600
Explanation: SI = PRT/100 = 1600.
Extra Drill Set (OPTUM flavor)
Section titled “Extra Drill Set (OPTUM flavor)”Q17: A finishes work in 16 days, B in 17 days. Days together?
Rate = 1/16 + 1/17. Days = reciprocal of that sum.
Answer: compute exactly before the exam; practice the fraction form daily.
Q18: Price increases by 13%. Consumption reduction to keep spend constant?
Reduction % = r/(100+r)×100 with r=13.
Answer: 13/(100+13)×100 (simplify).
Q19: Average of 7 numbers is 18. One number 24 replaced by 10. New average?
Sum 126 → 112 → average 16.
Answer: 16
Q20: SI on ₹8000 at 7.5% for 2 years?
SI = 8000×7.5×2/100 = ₹1200.
Answer: ₹1200
Q21: Synonym of “Mitigate”
Answer: Alleviate / reduce
Q22: Series: 3, 9, 27, 81, ?
Multiply by 3 → 243.
Answer: 243
Q23: If NORTH is coded as 13 (letter count? or positions), prefer position-sum drills for your mock bank.
Practice coding-decoding patterns: +1/−1, reverse, position sums.
Answer: pattern-dependent; master 4 common patterns.
Q24: All engineers are graduates. Some graduates are managers. Conclusion: some engineers are managers?
Does not follow necessarily.
Answer: Does not follow
Related
Section titled “Related”Coding
DSA
2026
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