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?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

I’m tall when I’m young, and I’m short when I’m old. What am I?

What English word has three consecutive double letters?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

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?

Who always enjoys poor health?