Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Riddle me this, Riddle me that,
What am I? I am made of wood, but you can't see me down?

what does the below math rebus puzzle mean?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

Can you guess the name of the month by looking the below rebus ?

John was drowned by he was not wet. How?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

If 2 workers can complete painting 2 walls in exactly 2 hours.

How many workers would be needed to paint 18 walls in 6 hours?

Prove that the below maths equation is true.

8 + 8 = 91