2, 3, 5, 9, 17, _ What is the next number in the sequence?

Can you find out the total number of triangles in the given figure?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

What does this simple rebus mean?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Solve this tricky question. You are trapped in a forest. With you, you have a gun preloaded with two bullets in it. In front of you, there is a tiger, a leopard and a jaguar.

How do you survive?

There is a place where if I stand up straight, I will still be considered sideways.

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?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?