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

The more of this there is, the less you see. What is it?

What do you call a fish without an eye?

You can hear me, but you can't touch or see me.

What am I?

A Car is crossing a bridge 2 miles long. The bridge can only hold 10000 lbs, which is the exact weight of the car. The Car makes it half way across the bridge and stops. A bird lands on the car. Does the bridge collapse? Explain.

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

I am quite hot but become too cold if you remove the first two letters. What am I?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?