Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Which is the smallest number that you can write using all the vowels exactly once?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

Spot what is wrong here in below Picture?

Out of four images which one is the odd one out?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?

What number divided by 4 is the same as that number minus 4?

Can you fill the blank with the correct number?

6 30 870 756030 _____

What happened when the wheel was invented?