There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

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

Name a key which is hardest to turn.

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

John went to buy some expensive, foreign chocolates. He only had Rs 100 with him. When he reached the shop, he got out and know that on those chocolates, there was a 15% import duty and 5% VAT.

How much worth chocolate should he buy so that he can accommodate it in Rs 100?