There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

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?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

Identify the 10 differences between the two given pictures.

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Spot 5 differences in two Christmas tree below:

Why is 6 afraid of 7?