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Book Math Trick

Find a book, a pen, a piece of paper and a calculator.

Ask a friend to choose any page in the book.
Ask your friend to write down the page number on a piece of paper.
Example : In the video, we chose page 141

Now ask your friend to choose one of the first nine lines on that page.
Ask your friend to write down the line number that has been chosen.
Example : In the video, we chose line 7

Ask you friend to choose one of the first nine words on that line.
Ask your friend to write down the number of the word chosen.
Example : In the video, we chose word 3

Close the book

Multiply the page number by 2
Example from the video :  141 x 2 = 282

282 x 5 = 1410

1410 + 20 = 1430

1430 + 7 = 1437

1437 + 5 = 1442

1442 x 10 = 14420

14420 + 3 = 14423

You must now subtract 250 from that number.
14423 - 250 = 14173

The last number (3) will tell you the number of the word  that your friend picked.

The second to last number (7) will indicate the line number

The remaining numbers (141) will indicate the page number.

Take the book, turn to that page, find line and word on that line.

Magic!

Watch the video.

 PS :  Try more math tricks here.