why comma here?

[eddy143]

Hi out there, as we all know, writing is one of the mian part of Grammar in any language but here i got a problem. Why do they use comma before and and at times no comma? for example,
1-Pennies, Nickels, Dimes, and quarters.
2-Is for you and me.
Thanks.

[konungursvia]

1 is a long list. 2 is not.

[eddy143]

thanks but you still haven't understand my point. here it goes again: why are we using comma after "dimes" and and still having "and" infront of it and the last word come. e.g.
1-pennies, nickels, dimes, and quarters.

[konungursvia]

Because it's a list.

[curates-egg]

... why are we using comma after "dimes" and and still having "and" in front of it ... e.g.
1-pennies, nickels, dimes, and quarters.

We generally, in British English at least, omit the comma before the 'and':

I want some pennies, nickels, dimes and quarters.

[Barb_D]

1. When you only have two items in the list (e.g., "you and me"), you don't use a comma.
2. When you have three or more items in a lits, the final comma before the "and" is optional. It's known as the serial comma or the Oxford comma.

You can read more about it here:Serial comma - Wikipedia, the free encyclopedia

I love my serial commas and use them all the time. It is a matter of style, not one of grammar, whether you use them too. Just be consistent.

[eddy143]

Hey Mr. BARD, want to say thanks for your answers and the link you directed to.
I do appreciate all your hardwork.
nice day!

[5jj]

Hey Mr. BARD,

Her name is Barb_D.