INTERESTING !!!!!!!!!

Vandana Krishnan

X A

Do you notice anything interesting in the following multiplication ?

138 X 42 = 5796

There are nine digits and all are different . Can you think of other such combinations ?

12 X 483 = 5796

18 X 297 = 5346

39 X 186 = 7246

48 X 159 = 7632

27 X198 = 5346

28 X 57 = 4396

 4  X1738 = 6952

 4  X 1963 = 7852

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An Impossible Proof

Can you prove 45 - 45 = 45 ?

Write down the figures from 9 to 1

                    987654321

subtract        123456789

                    864197532

Add up the digits .

9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 45

Add up the digits

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 = 45

Add up the digits

8 + 6 + 4 + 1 + 9 + 7 + 5 + 3 + 2 = 45

Therefore 

              45 - 45 = 45

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