If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

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

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.

I am white when I am dirty, and black when I am clean. What am I?

I am the fastest animal but cannot climb the tree. What am I?

What have one eye but still cannot see?

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

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?