John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Can you make four (4) nines (9) equal 100?

Find the number of squares in the below picture

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

Replace the question mark with the correct number.

In the image below, can you find the value of an angle(y)

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

Which English verb becomes past tense just by rearranging the letters?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?