What does the below rebus riddle means?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

Which city is three-fifths chick two third cat and 50% goat?

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?