I feel like an idiot for asking this but why is it ndx +1 for range instead of just ndx?

No chromosome is written like this, X comes first then Y.

Nice!

Well done! Very useful functions on string

The answer is to divide by 2, if the remainder is 1, then it is odd, and if the remainder is 0, it is even

It's too coooool!

da best

I don't even get this solution but I'm new to this. How do we decide which are odd-numbers and which are even?

What I did

if the condition to check will be "YX" , i think this solution wouldnt work ..
Traceback (most recent call last):
File "/workspace/default/.venv/lib/python3.10/site-packages/codewars_test/test_framework.py", line 112, in wrapper
func()
File "/workspace/default/tests.py", line 8, in basic_tests
test.assert_equals(chromosome_check('YX'), 'Congratulations! You're going to have a son.')
File "/workspace/default/solution.py", line 4, in chromosome_check
return "Congratulations! You're going to have a {}.".format(gender[sperm])
KeyError: 'YX'

Please check https://www.codewars.com/kata/reviews/56efabc004d4fd59b2000062/groups/62c3cf384b47570001757892

Wow I didn't think of that

Nice! Wish I thought of that :D

Got the same solution xD