How many bananas can you eat if your stomach is empty?

What is the next number in this series?

4,12,84,3612....

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

Why do we preferably have round manhole covers and not square ones?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

Can you spot the hidden girl in the picture below?

By moving just one matchstick, you need to make the below statement true. Can you do it?

How is the moon similar to a dollar?

What is common among 11, 69, and 88?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?