It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

If you say my name, I will no longer exist. What am I?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

With the help clues provided in the image, can you find the 5 digit key?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

What does the below mathematical rebus mean?