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Topics in Placement Papers
Two numbers are in the ratio 3:4. If their sum is 70, what are the numbers?
Correct Answer:
A. 30, 40
EXPLANATION
Let numbers be 3x and 4x. 3x + 4x = 70. 7x = 70. x = 10. Numbers are 30 and 40
What is 15% of 200?
Correct Answer:
C. 30
EXPLANATION
15% of 200 = (15/100) × 200 = 0.15 × 200 = 30
If a square has a side of 5 cm, what is its area?
Correct Answer:
C. 25 cm²
EXPLANATION
Area of square = side² = 5² = 25 cm²
A box contains 3 red balls and 2 blue balls. What is the probability of drawing a red ball?
Correct Answer:
C. 3/5
EXPLANATION
Total balls = 5. Red balls = 3. Probability = 3/5
If 30% of a number is 45, what is the number?
Correct Answer:
C. 150
EXPLANATION
Let number = x. 30% of x = 45. 0.30x = 45. x = 45/0.30 = 150
A rope of length 30 meters is cut into 5 equal parts. How long is each piece?
Correct Answer:
B. 6 meters
EXPLANATION
30 meters / 5 = 6 meters per piece
What will be the output of: console.log(typeof 5) in JavaScript?
Correct Answer:
B. number
EXPLANATION
The typeof operator returns 'number' for numeric values in JavaScript
In CSS, what does the 'z-index' property control?
Correct Answer:
C. Stacking order of elements
EXPLANATION
z-index controls the stacking order of overlapping elements on a webpage
Which of these is a NoSQL database?
Correct Answer:
C. MongoDB
EXPLANATION
MongoDB is a NoSQL database. MySQL, PostgreSQL, and Oracle are relational SQL databases
What does 'HTTP' stand for?
Correct Answer:
A. HyperText Transfer Protocol
EXPLANATION
HTTP stands for HyperText Transfer Protocol, the foundation of data communication on the web