What happened when the wheel was invented?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

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

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

What can you catch but never throw?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?