What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

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

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

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

Three friends decide to distribute the soda cans they had among them. When all of them had drunk four cans each, the total number of cans that remained was equal to the cans each one of them had after they had divided the cans.

Can you calculate the total number of cans before distribution?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Complete the given grid with valid words. You can only use the letters AAEEIIMMPPTT.

Hint: The grid reads the same across as down.

You bought me for dinner but never eat me. What am I?