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

What has one letter and starts with an E?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

How many runs at maximum can a batsman score in a normal one-day match? Consider the fact that the conditions are ideal and there are no No Balls, no Wide Balls and no Extras in that match.

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

10+10 and 11+11 can give you the same answer.

Explain how?

What's the only room from which no one can enter or leave