Three cars are driving on a track that forms a perfect circle and is wide enough that multiple cars can pass anytime. The car that is leading in the race right now is driving at 55 MPH and the car that is trailing at the last is going at 45 MPH. The car that is in the middle is somewhere between these two speeds.
Right now, you can assume that there is a distance of x miles between the leading car and the middle car and x miles between the middle car and the last car and also, x is not equal to 0 or 1.
The cars maintain their speed till the leading car catches up with the last car and then every car stops. In this scenario, do you think of any point when the distance between any two pairs will again be x miles i.e. the pairs will be x distance apart at the same time ?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Can you identify if it's a murder or a suicide ?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

Who can jump higher than a Mountain?

What seven-letter word has hundreds of letters in it?

I have branches, but no fruit, trunk or leaves. What am I?

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