Can you find the company name in the pictogram below?

If you say my name, I will no longer exist. What am I?

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

What breaks yet never falls, and what falls yet never breaks?

I have Rs.50 and I spend it in the way as below.

What is so fragile that saying its name breaks it?

There is a straight highway. Four different villages lie on that highway. The distance between them is different. The third village is 60km away from the first village; the fourth is 40 km away from the second; the third is 10 km near to the fourth that it is to the second.

Can you calculate the distance between the fourth and the first village ?

What work can one never finish?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?