A train travels 120 km in 2 hours and then 150 km in 3 hours. What is the average speed of the train?
Total distance = 120 + 150 = 270 km. Total time = 2 + 3 = 5 hours. Average speed = 5270 = 54 km/h
If a number is divisible by both 12 and 18, it must be divisible by:
LCM of 12 and 18 = 36. Any number divisible by both 12 and 18 must be divisible by their LCM, which is 36
What is the compound interest on Rs. 10,000 at 10% per annum for 2 years?
CI = P[(1 + r/100)^n - 1] = 10000[(1.1)^2 - 1] = 10000[0.21] = Rs. 2,100
If 5 workers can complete a job in 12 days, how many days will 8 workers take?
Work = 5 × 12 = 60 worker-days. Days for 8 workers = 860 = 7.5 days
A shopkeeper buys an item at Rs. 400 and sells it at Rs. 520. What is his profit percentage?
Profit = 520 - 400 = 120. Profit% = (400120) × 100 = 30%
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What is the value of (2.5)² - (1.5)² / 2?
(2.5)² - (1.5)² / 2 = [6.25 - 2.25] / 2 = 24 = 2
Which number is NOT a perfect square?
144=12², 169=13², 196=14², but 195 is not a perfect square (√195 ≈ 13.96)
Find the next number in the sequence: 1, 1, 2, 3, 5, 8, ?
This is the Fibonacci sequence where each number is the sum of the previous two: 5+8=13
If 30% of x is 45, then x is:
0.30 × x = 45. x = 045.30 = 150
All cats are animals. All animals breathe. Therefore:
This is deductive reasoning. If cats are animals and animals breathe, then cats must breathe
Which word is the odd one out?
Triangle, Pentagon, and Hexagon are polygons with straight sides. Circle is curved
Choose the word closest in meaning to VERBOSE:
Verbose means using more words than necessary; wordy is the closest synonym
Select the correctly spelled word:
The correct spelling is OCCASION with double C and single S
Find the odd one out:
Elephant, Tiger, and Lion are mammals. Pigeon is a bird
Choose the word that best completes the sentence: The _____ of the building was impressive.
Architecture (noun) refers to the design/structure of the building. Fits the context correctly
What does the acronym API stand for?
API is a standard term in software development meaning Application Programming Interface
Which of the following is NOT a programming language?
HTML is a markup language, not a programming language. Python, JavaScript, and Java are programming languages
Which SQL command is used to remove data from a database?
DELETE is used to remove specific rows. DROP removes tables, TRUNCATE removes all rows
What does REST stand for in web development?
REST stands for Representational State Transfer, an architectural style for APIs
Which data structure uses LIFO principle?
Stack uses Last In First Out (LIFO). Queue uses FIFO (First In First Out)
