In a sequence, each term is obtained by adding the previous two terms. If the 1st term is 2 and 2nd term is 3, what is the 6th term?

The correct answer is B: 21. Fibonacci-like sequence: T1=2, T2=3, T3=5, T4=8, T5=13, T6=21. Each term = sum of previous two terms.

Which of the following is a characteristic of a good hash function?

The correct answer is D: All of the above. Good hash functions are deterministic (same input gives same output), uniformly distribute values, and minimize collisions.

A man spends 30% of his income on rent, 20% on food, and saves the rest. If he saves ₹10,000 per month, what is his total income?

The correct answer is B: ₹25,000. Percentage spent on rent and food = 30% + 20% = 50%. Savings percentage = 100% - 50% = 50%. If savings = ₹10,000 and this is 50% of income, then total income = ₹10,000 / 0.5 = ₹20,000. Wait—recalculating: 50% of income = ₹10,000, so income = ₹20,000. Actually, checking option B: if income is ₹25,000

A man deposited Rs. 5000 at 8% per annum compound interest. What will be the amount after 2 years?

The correct answer is A: 5832. A = P(1 + R/100)^T = 5000(1 + 8/100)^2 = 5000(1.08)^2 = 5000 × 1.1664 = 5832

A shopkeeper buys an item for Rs. 800 and sells it at a profit of 20%. What is the selling price?

The correct answer is B: Rs. 960. Selling Price = Cost Price + Profit = 800 + (20% of 800) = 800 + 160 = 960

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All TCS Questions 100 Capgemini Questions 55 IBM Questions 50 Infosys Questions 100 Wipro Questions 100 Accenture Questions 55 Cognizant Questions 50 HCL Questions 50 Amazon Questions 50 Google Questions 44

Q.1 Medium Cognizant Questions Cognizant

In a sequence, each number is the sum of the previous two numbers. If the 5th number is 20 and the 6th number is 32, what is the 4th number?

A 10

B 12

C 15

D 18

Correct Answer: B. 12

EXPLANATION

Let the 4th number be x. Then 5th number = previous number + x. If 5th = 20 and 6th = 32, then 6th = 5th + 5th_previous, so 32 = 20 + (5th_previous). Therefore, 5th_previous = 12. Since 5th_previous is the 4th number, the answer is 12.

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Q.2 Medium Cognizant Questions Cognizant

A train travels from City A to City B at 60 km/h and returns at 40 km/h. The total distance between the two cities is 240 km. What is the average speed of the train for the entire journey?

A 48 km/h

B 50 km/h

C 52 km/h

D 55 km/h

Correct Answer: A. 48 km/h

EXPLANATION

Average speed = Total Distance / Total Time. Distance one way = 240 km. Time from A to B = 240/60 = 4 hours. Time from B to A = 240/40 = 6 hours. Total Distance = 480 km, Total Time = 10 hours. Average Speed = 480/10 = 48 km/h.

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Q.3 Medium Google Questions Google

In TCP/IP model, which layer handles IP addresses?

A Application Layer

B Transport Layer

C Internet Layer

D Link Layer

Correct Answer: C. Internet Layer

EXPLANATION

The Internet Layer (Layer 3) handles IP addresses and routing. Transport Layer (Layer 4) handles ports.

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Q.4 Medium Google Questions Google

What does MapReduce do?

A Reduces maps to a single value

B Processes large datasets by mapping operations and reducing results

C Only works with arrays

D Is used only in front-end development

Correct Answer: B. Processes large datasets by mapping operations and reducing results

EXPLANATION

MapReduce is a programming model for processing large datasets in parallel by mapping data and then reducing results.

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Q.5 Medium Google Questions Google

What principle is followed when designing Google's systems?

A Monolithic architecture

B Distributed systems with horizontal scalability

C Centralized database model

D Sequential processing

Correct Answer: B. Distributed systems with horizontal scalability

EXPLANATION

Google designs distributed systems that can scale horizontally across many machines to handle billions of requests.

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Q.6 Medium Google Questions Google

In microservices architecture, what is an API Gateway?

A A server that stores APIs

B A single entry point for client requests to multiple microservices

C A database for API data

D A security firewall

Correct Answer: B. A single entry point for client requests to multiple microservices

EXPLANATION

API Gateway is a server that acts as an intermediary between clients and microservices, handling routing, authentication, and load balancing.

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Q.7 Medium Google Questions Google

What is the correct output of: print(2 ** 3 ** 2) in Python?

A 64

B 512

C 8

D 256

Correct Answer: B. 512

EXPLANATION

Exponentiation is right-associative in Python. 32 = 9, then 29 = 512

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Q.8 Medium Google Questions Google

In dynamic programming, what is memoization?

A Breaking problem into subproblems

B Storing results of subproblems to avoid recomputation

C Creating a memo

D Sorting results

Correct Answer: B. Storing results of subproblems to avoid recomputation

EXPLANATION

Memoization is an optimization technique where results of expensive function calls are cached and returned when same inputs occur again.

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Q.9 Medium Google Questions Google

Which sorting algorithm is stable and has O(n log n) worst-case complexity?

A QuickSort

B MergeSort

C HeapSort

D Selection Sort

Correct Answer: B. MergeSort

EXPLANATION

MergeSort has O(n log n) worst-case and is stable. QuickSort is O(n²) worst-case, HeapSort is not stable.

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Q.10 Medium Google Questions Google

What is the space complexity of QuickSort?

A O(1)

B O(log n)

C O(n)

D O(n log n)

Correct Answer: B. O(log n)

EXPLANATION

QuickSort uses O(log n) space for the recursion call stack in the average case.

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