Name a key which is hardest to turn.

My location can be determined by the below rebus.
So where am i ?

The current time can be represented by below textual rebus.

0
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B.Sc
LLB

Can you tell us the current time?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Count the number of squares in the picture below.

Which country gets ill every time?

What does below pictogram mean?

What is black when you buy it, red when you use it, and gray when you throw it away?

What do you think with the below Picture ?