Find the value of "?" in the ball picture Riddle below:

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Count the number of triangles in the given picture.

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?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?