I am quite hot but become too cold if you remove the first two letters. What am I?

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”

Detective Rockford was jogging near the beach at 4:30 am.
He hears a sound near the shack "No Michael, Please Do not shoot me".
Next instance he heard the sound of gunfire. Rockford rushes to the shack where he finds women lying dead and a gun in close proximity of three "Doctore Lawyer and a Teacher".

Rockford immediately knew that the Lawyer has committed the crime. How?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

In the image given, you can find several triangles. Can you count them all?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

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

Find the next number in the series below

21 32 54 87 131 ?