From the description:

If two numbers in the argument array have the same number of digits, return the first one in the array.

10760 = 5 digits,
17204 = 5 digits,
95013 = 5 digits,
6474 = 4 digits,
42 = 2 digits

So, the max amount of digits is 5. Since there are multiple that have length 5, take the one that comes up first. And that is 10760.

Log
[ 1, 10, 100 ]
100
[ 9000, 8, 800 ]
9000
[ 8, 900, 500 ]
900
[ 3, 40000, 100 ]
40000
[ 1, 200, 100000 ]
100000
[ 7000000, 10, 100 ]
7000000
[ 30744, 220584, 48, 58140, 155610 ]
220584
[ 14036, 0, 21889, 20880, 217080 ]
217080
[ 10760, 17204, 95013, 6474, 42 ]
95013
expected 95013 to equal 10760;
Bro, what the hack?! Look at the last line. How should it work lol?