Replace the question mark with the correct number in below Picture:

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!

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

Find the missing letter in the last circle logically in the given below picture.

Solve below rebus puzzle?

What is the word or phrase below?
R | E | A | D

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?