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

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

Why blonde cannot dial 911?

I travel all around the world but always stay in the corner. What am I?

What is the Surname of Barbie Doll?

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?