Find the next number in the sequence

5 12 24 36 ?

What building has the most stories?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Which is the smallest number that you can write using all the vowels exactly once?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

What is the largest number you can write with just 3 digits?

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Can you find a five letter word that is left with only two letters if one is removed?