Exercises¶

1. Write a function print_triangular_numbers(n) that prints out the first n triangular numbers. A call to print_triangular_numbers(5) would produce the following output:

   1       1
   2       3
   3       6
   4       10
   5       15
   

   (hint: use a web search to find out what a triangular number is.)

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   (ex_7_8)