Why do we preferably have round manhole covers and not square ones?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

When we see 2 but call 10?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Where do you go to learn how to make ice cream?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Eight of us go fourth, not back, to protect our king from an attack. What are we?