I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

Can you find the thief by just looking at the picture below?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Can you solve the below tricky visual equation?

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

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

What English word has three consecutive double letters?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?