Can you count the number of lines in the below picture?

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

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

How many bananas can you eat if your stomach is empty?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What does below chemistry rebus means?