Find the next number in the sequence

5 12 24 36 ?

A dying old man wants to divide his entire land between his only two sons. Since his only wish is to treat them as equal as both of them have been too good to him, he wants to divide his land equally between them. The problem is that the land is significantly irregular in shape and thus there is no choice of cutting them into two equal halves.

Can you help him divide the land in a manner that both of his sons will be happy?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Solve the following series:
AZ, GT, MN, __, YB

What can you see in the middle of March and April that you can never see in any other month?

Which is the rope you never skip with?

How do you go from 98 to 720 using just one letter?