Explanation

Odd function: F(-x) = -F(x) → F(x) + F(-x) = 0

Even function: F(-x) = F(x) → F(x) + F(-x) = 2F(x)

Here we have F(x) + F(-x) = 6, a constant

That means the function is symmetric about y = 3

So we call it constant symmetric form.

Last verified on 21-06-2026

Explanation

When a value of x is given, we replace x in the polynomial and simplify to get the result.

This is called evaluation of a polynomial.

Last verified on 21-06-2026

Explanation

Greatest two-digit number = 99

First natural number = 1

Difference = 99 - 1 = 98

Last verified on 21-06-2026

Explanation

Numbers are multiples of 6, and first number after A is 18  

So the numbers are: 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84  

That’s 12 numbers total  

Last number = 18 + (12-1)×6 = 18 + 66 = 84  

B comes right after the last number, and B also must be a multiple of 6  

Next multiple of 6 after 84 is 84 + 6 = 90  

Last verified on 21-06-2026

Explanation

Square area 64 m² → side = 8 m → wire length = 4×8 = 32 m  

Wire becomes circle → circumference = 32 m  

2πr = 32 → r = 16/π  

Area = πr² = 256/π ≈ 81.5 m²

Last verified on 21-06-2026

Explanation

• In peer-to-peer (P2P) networking, every computer can act as a client, server, or both at the same time.
• There is no central server controlling the network.
• Each computer (peer) can share resources and communicate directly with other computers.

Last verified on 21-06-2026

Explanation

• The density of gases increases when pressure is increased because gas molecules come closer together.
• Density is the mass per unit volume of a substance.
• When pressure increases, the volume of gas decreases (at constant temperature), causing density to increase.
• This relationship follows Boyle’s Law.

Last verified on 21-06-2026

Explanation

• A macro is an automated sequence of commands used to perform repetitive tasks quickly in software applications.
• It saves time by executing multiple steps with a single command.
• Commonly used in MS Word, Excel, and other office software.
• It can be recorded or programmed by the user.

Last verified on 21-06-2026

Explanation

• Phishing is a cybercrime where fake emails, messages, or websites are used to steal sensitive information like passwords or bank details.
• It tricks users into believing the message is from a trusted source.
• Criminals often use social media, email, or SMS for phishing attacks.
• The main goal is identity theft or financial fraud.

Last verified on 21-06-2026

Explanation

• A firewall’s main function is to prevent or block unauthorized access to a computer network.
• It acts as a security barrier between trusted and untrusted networks (like the internet).
• It filters incoming and outgoing network traffic based on security rules.
• It helps protect systems from hackers and unwanted access attempts.

Last verified on 10-06-2026