You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

Solve the puzzle by telling what does below picture means.

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

I shave every day, but my beard stays the same. What am I?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

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