Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

What has one letter and starts with an E?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

What can go up a chimney down, but can’t go down a chimney up?

When is the top of a mountain similar to a savings account?

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!

Can you count the number of matches in the picture below ?

who is silent in the parliament?

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

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?