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

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

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?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?