Why do we preferably have round manhole covers and not square ones?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

What makes this number unique: 8,549,176,320?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

Can you find the missing piece of the Porsche?

What type of tree can I carry in my hand?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

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?

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