Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

What always comes into a house through the keyhole?

Decode below rebus
D
N
A
T
S , D

A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?

Solve the following series:
AZ, GT, MN, __, YB

Solve this riddle by finding the odd one out from the rest.

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Can you count the number of squares in the given picture?