I am a prime number.
The double of myself is equal to the square of me.

which number am I?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

How far can you walk into the woods?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

what does the below rebus means?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

What do you call a fish without an eye?

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?