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

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

Can it be possible to build a house that has all its four walls facing towards the South?

Which wheel of car does not rotate when you turn your car right?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?

Can you solve below mathematical equation?

2^1234 - 2^1233

Solve the following series:
AZ, GT, MN, __, YB

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?