Here below is a serie - please replace X and Y with the correct letters or maybe numbers in the serie.

7 5 3 4 2 , 1 0 9 0 8 X Y

Preatty silly one... but a nut to crack if you like these exercises.

I gave you 10 coins, you got one correct out of 2!

Y=7 correct. X is not 0!

I don't get why Y=7 but I think X=, (comma).

Sorry X is not comma... Hm, no coins for that sorry

Ok, I will make it simpler:

You may swap the , for a . !

7 5 3 4 2 . 1 0 9 0 8 X Y

7 5 3 4 2 , 1 0 9 0 8 X Y

stupid of me to be so Swedish... both series work of course!

Y is 7 so just X is left to figure out...

The logic has to do with the keys on the number pad of the keyboard, moving down diagonally. Following that logic, I think that X=6. But why is there a 0 between 9 and 8?

the reason is that my numpad has the 0 in 2 places... Something must be a little tricky. gr8! coins for the solution in a moment

I am having less! But it was fun!

When you go from 1 to the space between 0 and , you then press the 0 since the button also cover that space. From that position you go the top row 9... After that start with the 0 at the bottom left to 8 and 6. Hope you got the idea.