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?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

What do you get if you add 2 to 100 four times?

Replace the question mark with the number below given a simple math problem.

What word begins and ends with an E, but has only one letter?

What work can one never finish?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?