Can you make a six-letter word using the letters N, A and B ?

Client Dempsey living in one of the East Coast states of the U.S. was talking to Landon Donovan, who was living in the West Coast state of the U.S.

Dempsey: What time is it?
Donovan: Wow, It is the same time here.

How is this possible?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Our product and our sum always give the same answer. Who are we?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

How many triangles can you find in this given picture?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

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?