What has many teeth, but cannot bite?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Find the next number in the series below

21 32 54 87 131 ?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Why is 6 afraid of 7?

Why Aeroplane windows are round?

Replace the question mark with the correct number below.

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. 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?

What demands an answer, but asks no questions