I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

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).

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Can you count the number of triangles in the picture below?

I know a nine-letter word having only one vowel.
Do you ?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

Can you find out which options fits best with the missing column?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Make a sentence consisting of three words that have the whole alphabet.