Placement Papers - MCQ Practice Questions

Total distance = 120 + 180 = 300 km. Total time = 2 + 3 = 5 hours. Average speed = $\frac{300}{5}$ = 60 km/h

15% of x = 45, so x = $\frac{45}{0}$.15 = 300. Then 25% of 300 = 0.25 × 300 = 75

Selling Price = Cost Price + Profit = 800 + (20% of 800) = 800 + 160 = 960

Simple Interest = (P × R × T)/100 = (5000 × 8 × 3)/100 = 1200. Total = 5000 + 1200 = 6200

Girls = 35% of 60 = 21. Boys = 60 - 21 = 39

A:B = 5:3. If A = 20, then 5x = 20, so x = 4. B = 3x = 3(4) = 12 years

Total balls = 3 + 4 + 5 = 12. P(red) = $\frac{3}{12}$ = $\frac{1}{4}$

Profit = 25% of 500 = 0.25 × 500 = 125

Work done per day = $\frac{1}{10}$ = 10%. In 3 days = 3 × 10% = 30%

By transitivity, if a < b and b < c, then a < c

Sum = Average × Count = 30 × 5 = 150

Each number is double the previous: 2, 4, 8, 16, 32, 64. Pattern is multiplication by 2

A dog barks, similarly a cat meows. This is a sound association analogy

12, 24, 36, 48 are all multiples of 12. 58 is not a multiple of 12

Stack follows LIFO principle. Queue follows FIFO. Array and Tree are not strictly LIFO/FIFO structures

Inheritance allows a class to inherit properties and methods from another class (parent/base class)

REST stands for Representational State Transfer, an architectural style for web services

A Primary Key uniquely identifies each record and cannot contain null values

Cloud computing provides scalability, flexibility, and pay-as-you-go pricing models

ABC12345 has uppercase (A,B,C), digit (1,2,3,4,5), and is 8+ characters long