Can you identify the hidden rebus in the image below?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

What does this rebus means ?

PROG WORKRESS

There are forty elephants and they have forty-fore heads. How can this be possible?

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

What Adam and Eve do not have but the rest of the people have?