what does the below rebus means?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

What is the difference between a jeweller and a jailer?

I cannot talk, but I always reply when spoken to. What am I?

It's been the first day of the school when a young girl was found raped and murdered.
Police suspect four male teachers as on the killers and ask them what they were doing in the morning in time 8:00 am.
1. Wayne: I was reading the newspaper.
2. Terry: I was checking chemistry papers
3. Bridge: I had locked myself in my room as my wife left me.
4. Cole: I dropped my wife to her office.

Who is the killer?

Find the value of "a" by solving the maths equation in the picture below:

Readers with excellent visual skills can find three differences between the pictures of a rabbit and a fox in 11 seconds. Can you? Test your attentiveness now!

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?