How many sides does a circle have?

What has many keys but can’t open a single lock?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

If six children and two dogs were under an umbrella, how come none of them got wet?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Which Burger Is Different in below image?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

Give it food and it will live; give it water and it will die.

How can you write nineteen in a manner that if we take out one, it becomes twenty?