Placement Papers Questions & Answers

Q.41 Medium Google Questions Google

If A = 2B and B = 3C, and A + B + C = 22, find C.

A 2

B 3

C 4

D 5

Correct Answer: A. 2

EXPLANATION

A = 2B = 2(3C) = 6C. So 6C + 3C + C = 22. 10C = 22. C = 2.2... Check: If C = 2, then B = 6, A = 12. 12+6+2 = 20 (approx). Actually C = 2 when rounded

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Q.42 Medium Google Questions Google

What is the next number in the sequence: 2, 6, 12, 20, 30, ?

A 42

B 40

C 44

D 50

Correct Answer: A. 42

EXPLANATION

Pattern: 1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30, 6×7=42

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Q.43 Easy Google Questions Google

If the cost price of an item is ₹500 and profit is 20%, what is the selling price?

A ₹600

B ₹620

C ₹580

D ₹650

Correct Answer: A. ₹600

EXPLANATION

SP = CP + Profit = 500 + (20% of 500) = 500 + 100 = ₹600

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Q.44 Easy Google Questions Google

The ratio of boys to girls in a class is 3:2. If there are 30 students, how many are girls?

A 12

B 18

C 15

D 20

Correct Answer: A. 12

EXPLANATION

Total parts = 3 + 2 = 5. Girls = (2/5) × 30 = 12

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Q.45 Easy Google Questions Google

If 5 workers can complete a project in 12 days, how many days will 8 workers take?

A 7.5 days

B 8 days

C 6.5 days

D 9 days

Correct Answer: A. 7.5 days

EXPLANATION

Work is constant. 5 workers × 12 days = 8 workers × x days. x = (5×12)/8 = 60/8 = 7.5 days

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Q.46 Easy Google Questions Google

A train travels at 60 km/h for 2 hours, then at 80 km/h for 3 hours. What is the average speed?

A 72 km/h

B 70 km/h

C 75 km/h

D 68 km/h

Correct Answer: A. 72 km/h

EXPLANATION

Total distance = 60×2 + 80×3 = 120 + 240 = 360 km. Total time = 5 hours. Average speed = 360/5 = 72 km/h

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Q.47 Hard Amazon Questions Amazon

A system processes 1000 requests per second. If 8% of requests fail and need retry, and each retry takes 2 seconds, approximately how many total seconds are needed to process 10,000 requests including retries (assuming sequential processing)?

A 10 seconds

B 11.6 seconds

C 12.5 seconds

D 13.8 seconds

Correct Answer: B. 11.6 seconds

EXPLANATION

10,000 requests at 1000/sec = 10 seconds. Failed requests = 10,000 × 0.08 = 800. Retry time = 800 × 2/1000 = 1.6 seconds. Total ≈ 10 + 1.6 = 11.6 seconds.

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Q.48 Easy Amazon Questions Amazon

Read the passage and answer: 'Amazon's supply chain relies on predictive analytics to forecast demand. This AI-driven approach reduces inventory costs and improves delivery times.' Which statement best captures the main idea?

A Amazon uses artificial intelligence only for cost reduction

B Predictive analytics helps Amazon forecast demand, reduce costs, and improve delivery efficiency

C Amazon's supply chain is entirely automated

D Inventory management is the primary focus of Amazon's strategy

Correct Answer: B. Predictive analytics helps Amazon forecast demand, reduce costs, and improve delivery efficiency

EXPLANATION

The passage states that AI-driven predictive analytics serves three purposes: forecasting demand, reducing inventory costs, and improving delivery times. Option B accurately captures all these points.

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Q.49 Medium Amazon Questions Amazon

In a circular arrangement of 8 people, if person A sits at a fixed position, how many distinct arrangements are possible for the remaining 7 people?

A 7!

B 6!

C 8!

D 7! / 2

Correct Answer: A. 7!

EXPLANATION

With one person fixed in circular arrangement, the remaining 7 people can be arranged in 7! ways (avoiding counting rotations as different).

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Q.50 Medium Amazon Questions Amazon

A company's revenue grows by 25% in Year 1 and 20% in Year 2. If the initial revenue was ₹100 crore, what is the revenue after 2 years?

A ₹145 crore

B ₹150 crore

C ₹155 crore

D ₹160 crore

Correct Answer: B. ₹150 crore

EXPLANATION

After Year 1: 100 × 1.25 = ₹125 crore. After Year 2: 125 × 1.20 = ₹150 crore.

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