What has hands, but can’t clap?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Next Number in the Series,

5, 16, 49, 104, ?

What Does this text mean:

important=important

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

What Adam and Eve do not have but the rest of the people have?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

During which month do people sleep the least?