If you are thinking like C3PO in Star Wars, the answer is zero. If you definition are machines that do work for humans in an automatic manner, the answer is many million. If you question is aimed at the industrial robots used in assembly lines then many thousands.
Sorry, but to get the answer you need, you really need to ask a more specific question.
Personally I have a few Roomba's that help with keeping the floors clean, a dish washer and clothes washer and dryer that all could be considered 'robots' in many definitions. Even the automation of the thermostat in a house to keep us comfortable would have been considered a 'robot brain'. If you use a DVR like a TIVO, it does help keep the 'drudgery' of having to program your video recorder with a timer to allow you to watch your favorite programs later, ... in many ways I consider that a 'robot'.
I know that is not the answer you thought you were asking for, but it is more accurate than most I have read.
there are more than 100000 types of robots
lots!
Scientists are now looking into how robots will change the world in the future. The world of robotics has come a long way since the first industrial robots were introduced in the 1960s. Today, robots are used in a wide range of industries, including manufacturing, healthcare, and entertainment. As technology continues to advance, the future of robots is looking increasingly exciting. /how-will-robots-change-the-world-in-the-future/
Many places sell robots, There are many different types of robots and complexity. They can be found in toy stores and hobby shops.
It's hard to be precise, but the IEEE estimate around 6.5 million.
there are more than 100000 types of robots
lots!
There are 476,894,909,342,676 robots currently in the world today 4-13-09.
It is difficult to give an exact number, but it is estimated that there are millions of robots in the world, ranging from industrial robots to home robots and everything in between. The number continues to grow as technology advances and robots become more prevalent in various industries.
There are literally hundreds of types of submarine robots. All major countries of the world develop them.
robots with personalities
How many robots and satilites does mars have
Don't build robots that could take over the world.
They are almost 270 robots
There are many different robots in the universe. Also the scientists always create new robots everytime.
Shoot Many Robots happened in 360.
Many people are afraid of losing their jobs to robots. They want to feel a sense of purpose in working and they want the income.