Course of Raku / Essentials / Numbers / Integer numbers
Quiz: Integer numbers
Select all the examples with valid integer numbers.
1  42 

1  0 

1  42 

1  +100 
You can add + if you want. 
0  3.14 
This is a valid number, but not an integer number. 
1  1000 

1  1_000 

1  10_000 

0  10__000 
Two underscores are not allowed. 
0  _100 
A number cannot start with underscore. 
0  100_ 
A number cannot end with underscore. 
1  1_0_0_0 
This is correct, but looks weird. 
1  10_00 
This is also correct, but it is not the best choice. 
0  50,000 
A comma does not split the number into thousands. 
0  45 678 901 
Spaces are not allowed inside numbers. 
More practice
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