What four weights can be used to balance from 1 to 30 pounds?

Complete the table series riddle by finding the number that can replace "??".

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?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Count the number of triangles in the given picture.

What does a man do only once in his lifetime, but women do once a year after they are 29?

I add 5 to 9 and get 2. The answer is correct, so what am I?

Ten coins have been arranged as you can see in the given picture. In this arrangement, a triangle is formed pointing upwards. You have to invert the position of the triangle and make it point downwards while changing the position of 3 coins only. Can you do it?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

Can you name four days which start with the letter 'T'?