WorksheetsPlacera 2k25
Total questions: 20
Worksheet time: 19mins
What is 25% of 240?
40
50
60
70
5x - 3 = 2x + 9, what is the value of x?
3
4
5
6
Which data structure is used for implementing recursion?
Queue
Stack
Linked List
Tree
The average of 5, 10, and 15 is:
8
10
12
15
A person can complete a work in 20 days. How much work does he finish in 5 days?
1/2
1/4
1/5
1/3
(45 ÷ 9) × 5 = ?
15
20
25
30
If a book is bought for ₹200 and sold for ₹240, the profit % is:
15%
18%
20%
25%
The ratio of 2:3 is equal to:
4:5
6:9
8:10
10:12
How many right angles are formed in 12 hours by the hands of a clock?
22
24
44
48
In a group of 60 people, 25 speak English, 20 speak French, and 15 speak both. How many people speak neither English nor French?
25
30
35
40
Which SQL clause is used to filter groups after aggregation?
WHERE
HAVING
GROUP BY
ORDER BY
Which protocol is used for secure email transfer?
SMTP
IMAP
POP3
S/MIME
The principle of locality in memory management refers to:
Using cache for faster access
Frequent access to nearby memory locations
Keeping page tables in RAM
Virtual memory allocation
Which sorting algorithm has worst-case time complexity O(n log n)?
Bubble Sort
Insertion Sort
Merge Sort
Selection Sort
Which of the following is used in public key cryptography?
AES
RSA
DES
SHA-256
Which of the following is not a type of operating system?
Batch OS
Distributed OS
Real-Time OS
Compiler OS
In a relational database, the Cartesian product of two relations is also known as:
Natural Join
Cross Join
Inner Join
Self Join
Which of the following is a NoSQL database?
MySQL
Oracle
MongoDB
PostgreSQL
Which of the following is used for deadlock prevention?
Wait-die scheme
Banker's Algorithm
Resource Allocation Graph
Round Robin Scheduling
What is the binary of 13?
1100
1101
1011
1001
