What does this Rebus Picture means ?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Can you spot the man between the coffee bean in the picture below ?

I am white when I am dirty, and black when I am clean. What am I?

I can write cow in 13 letters.

Can You?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

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?

What does the below image rebus riddle means ?