What is the missing number in this sequence: 5, 10, 20, 40, ?
Each number is multiplied by 2. 5×2=10, 10×2=20, 20×2=40, 40×2=80
A train travels 300 km in 5 hours. If it increases its speed by 20%, how long will it take to cover 360 km?
Original speed = 5300 = 60 km/h. New speed = 60 × 1.2 = 72 km/h. Time = 72360 = 5 hours
A man bought a car for Rs. 5,00,000 and sold it at a loss of 15%. What is the selling price?
Selling Price = Cost Price × (1 - Loss%). SP = 500000 × (1 - 0.15) = 500000 × 0.85 = Rs. 4,25,000
If the compound interest on Rs. 10,000 at 10% per annum for 2 years is compound annually, what is the amount?
Amount = P(1 + R/100)^n = 10000(1 + 10010)^2 = 10000(1.1)^2 = 10000 × 1.21 = Rs. 12,100
What is the average of first 20 natural numbers?
Sum of first n natural numbers = n(n+1)/2. Sum = 20×221 = 210. Average = 20210 = 10.5
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A person walks 6 km North, then 8 km East. What is the shortest distance from the starting point?
Using Pythagorean theorem: Distance = √(6² + 8²) = √(36 + 64) = √100 = 10 km
A mixture contains milk and water in the ratio 5:3. If the total quantity is 80 liters, how much milk is there?
Milk:Water = 5:3, Total parts = 8. Milk = 85 × 80 = 50 liters
A number increased by 25% becomes 500. What is the original number?
Let original number = x. x × 1.25 = 500. x = 1500.25 = 400
Find the LCM of 12, 18, and 24.
12 = 2² × 3, 18 = 2 × 3², 24 = 2³ × 3. LCM = 2³ × 3² = 8 × 9 = 72
Which word does NOT belong to the group? CAR, TRUCK, BICYCLE, AIRPLANE
All except AIRPLANE are land vehicles. AIRPLANE is an air vehicle
TIGER: STRIPES as ZEBRA: ?
Tiger is characterized by stripes. Zebra is also characterized by stripes
What does 'ubiquitous' mean?
'Ubiquitous' means being or appearing everywhere at the same time; omnipresent
Read the passage: 'Technology has revolutionized education. Students now have access to online courses from top universities.' What is the main idea?
The passage states that technology has revolutionized education and enabled access to courses. This is the main idea
Which of the following best describes SQL?
SQL (Structured Query Language) is used for managing and querying relational databases
What is the output of: print(10 // 3) in Python?
The '//' operator performs floor division, which returns 3 (the integer part of 310)
Which data structure uses LIFO (Last-In-First-Out)?
A Stack uses LIFO principle where the last element added is the first one to be removed
Which protocol is used for secure web communication?
HTTPS is HTTP with encryption/security using SSL/TLS protocols for secure communication
What is the main purpose of version control systems like Git?
Version control systems track code changes over time and facilitate team collaboration by managing different versions
What does API stand for?
API stands for Application Programming Interface - a set of rules that allows different applications to communicate
What is an exception in programming?
An exception is an event that occurs during program execution that disrupts the normal flow, requiring special handling
