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Numerals

On a Microsoft calculator you can enter the numerals 0 - 9 with the keys

 0      1      2      3      4      5      6      7      8      9 

 


Example 1

To calculate 0 × 1 = 0

 0   1  1 = 0

and also 0 × 0 = 0

 0   0  0 = 0

 


Example 2

To calculate 0 / 1 = 0

 0  /  1  = 0

 


Example 3

Enter 1 / 0

 1  /  0  =    Kan niet door nul delen.

Dividing by zero always gives a message, and that is correct.

 


Example 4

Enter 00

 0  xy  0  0 = 1

That is correct, as it is determined per definition that 00 ≝ 1.

 


Example 5

Enter 0!

 0  n! 1

This is correct, then it is determined by definition that 0! ≝ 1.

 


Example 6

To calculate cos (0) = 1

 0  cos 1

 


Example 7

To calculate √0 = 0

 0  0

 


Details

In the decimal system you need the 0 to indicate that a place in a decimal number has no value, as in the number 12305. The total value of a number can also be 0.

 


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