Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

What is the next number in the series?

15 29 56 108 208 ?

what does this below rebus represent identXQQQQQME

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

John was piloting a plane behind a car but was never able to overtake it. Why?

Using eight eights and addition only, can you make 1000?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

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.