If the string is a flemish twist it should have at least 2 sometimes 3 bundles. Inside each bundle is individual strands that make up the bundle. Just like 2 groups containing 7 strands per group/bundle, would mean it's a 14 strand string. If the end loops have serving over them, then it's a endless loop string. If it's an endless, just count the total of strands in the string itself, you can do the same thing with a flemish twist, except you will have usually pull the twist apart a little and that's when you'll see the bundles containing the multiple strands.