Originally Posted by Benny

I'm going to back 8 horses in each of 5 races.

There are 10 Doubles
" " 10 Trebles
" " 5 Fourfolds
" " 1 Accumlator

AB, AC, AD, AE, BC, BD, BE, CD, CE, DE

ABC, ABD, ABE, ACD, ACE, ADE, BCD, BCE, BDE, CDE

ABCD, ABCE, ABDE, ACDE, BCDE

ABCDE

Are those combinations correct?

Benny