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

Rearrange the letters in "new door" to make one word.

If 1+9+8=1, what is 2+8+9?

O_er_t_o_

Complete the missing letters of the given word.

What number comes next in this sequence:
7 8 5 5 3 4 4 _

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?

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?

Can you write down eight eights so that they add up to one thousand?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?