*Calculators are minicomputers where its invention made a tremendous impact on technology especially in the field of mathematics. now calculators are available with different sizes and shapes with added features and complex mathematical equations*

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Do you ever done this on your calculator*.*

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*here are some fun with the calculator*

12345679 * 9 = 111111111

12345679 * 18 = 222222222

12345679 * 27 = 333333333

12345679 * 36 = 444444444

12345679 * 45 = 555555555

12345679 * 54 = 666666666

12345679 * 63 = 777777777

12345679 * 72 = 888888888

12345679 * 81 = 999999999

12345679 * 999999999 = 12345678987654321

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Try this in a calculator: Trick 2** **

Divide 1/7

The result will be 0.142857142857...

then

**2/7**will get 0.285714285714...

then

**3/7**will be 0.428571428571...

see the similarity in each case the same digits

"142857" is repeating over and over again, just starting at a different spot.

### Try this in a calculator: Trick3

Type any random three digit number twice

For Example: lets start with number 789, so we get

**789789**
divide the number by 11:

**789789**/ 11 = 71799
Then divide by 13: 71799/ 13 = 5523

Then divide by the original number: 5523/ 789 = 7

You will

**always ends with 7**
Try this with any other random three digit number,any how it ends with 7

### Try this in a calculator: Trick4

Ask them to double the number, then offer them a random number add with the result, it may be 10,20,50 etc..

then find its half or divide that by 2

Now get them subtract their choosed number from the it, and now you announce the result.

the result will be always half of the offered number ie, if we offered 20 to add then result will be 10 or if choose 50

then 25

For example: the number chooses is 6

when double its 12

now we offer a 50,So 12 +50=62

let them take the half:62/2=31

and then when your friend subtract choosed number that is 6 from that you get 25 which is the half of offered number.so you can say that 25 is the current answer.

like wise you can try with any other numbers.note that the answer will always the half of the number we offered

## 1 Comments

Good post keep it up

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