what does the below math rebus puzzle mean?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

Can you count the number of triangles in the picture below?

What is the next number in the series?

15 29 56 108 208 ?

What Time Should the last watch show in the below figure?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

What does below rebus means ?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?