Before Mount Everest was discovered, what was the highest mountain in the world?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

The centre of the third figure is empty. What digit should fit inside?

I shave every day, but my beard stays the same. What am I?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

I have a sore throat and a severe headache. I have four tablets with me that are identical to each other and they do not have any cover on them. There is no way I can identify which tablet serves what purpose. The only thing that I know is that two of these four tablets are for the throat and the remaining two are for the headache. To treat my condition, I must take 1 of each. What will I do now?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111