When 99 is considered higher than 100?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What does below pictogram mean?

Can you count the number of children in the picture below

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

Which five letter word can be added at the end of below word to form a
valid word?

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A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

Who is that with a neck and no head, two arms and no hands? What is it?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

If it took eight men ten hours to build a wall, how long would it take four men to build it?