What is the next number in this matchsticks series riddle?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

The more of this there is, the less you see. What is it?

John was piloting a plane behind a car but was never able to overtake it. Why?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

In the four images below, can you find the odd one out?

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!

Decode below rebus
D
N
A
T
S , D

What has 13 hearts but no other organs?

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?