Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

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?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Before Mount Everest was discovered, what was the highest mountain in the world?

Our product and our sum always give the same answer. Who are we?

Why 1729 is a magic number? Answer Logically.

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

Can you solve the photo plexer logic ?

What do you think with the below Picture ?

What does Alexander the Great and Winnie the Pooh have in common?