Multiply by 11 | 16 Jul 2009

Discussion in '\$1 Daily Competition' started by shabbir, Jul 16, 2009.

1. shabbirAdministratorStaff Member

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Result when we multiply 12345678901234567890123456789012 by 11.

Note : The answer should not be in the exponential form as we get in Windows Scientific calculator but it should be the complete figure upto the last digit.

2. hotnspicyNew Member

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135802367913580236791358023679132

3. hotnspicyNew Member

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135 80246 79135 80246 79135 80246 79132

4. !Newbie!New Member

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135802467913580246791358024679132

5. shabbirAdministratorStaff Member

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And any update on how did you do that.

6. hotnspicyNew Member

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naimish likes this.
7. naimishNew Member

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@ hotnspicy,

It seems first you counted yourself the whole figure :lol:

Then you make it out from this website

Anyways, Congrs

8. shabbirAdministratorStaff Member

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Ohh My God but I would tell you something very simple method which would be good for learning as well.

For multiplication of 11 use the following technique

123 x 11
Consider the number as 01230
And answer would be
Code:
```0+1 | 1+2 | 2+3 | 3+0
1  |  3  |  5  | 3
```
How we get this

123
x11
===
0123
123x
===
1353

So applying same on the number

012345678901234567890123456789012
12345678901234567890123456789012x
==========================
135802467913580246791358024679132

Congrats hotnspicy

9. !Newbie!New Member

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I used the good old traditional method though that took time I guess
Congrats hotnspicy

10. shabbirAdministratorStaff Member

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Yes its traditional one only but to speed up that we have this technique