Odds-on pụtara na ọnụ ọgụgụ ahụ na-egosi ike karị n'ihi ọnyịnya: decimal n'okpuru 2.00, fractional nwere nọmba buru ibu n'akụkụ nri (1/2). Odds-against bụ ihe ọzọ: decimal n'elu 2.00, fractional 2/1 ma ọ bụ elu. Evens (2.00) bụ ụzọ abụọ. Okwu a na-eme ka uche dị iche, n'ihi na mmetụta pụtara iche n'akụkụ abụọ. Odds-on favourites na-etu ụtụ na-abụ nke ndị na-eji ego akpagidewo; odds-against underdogs na-etu ụtụ na-abụ ihe lottery. Mmetụta abụọ a enweghị ihe jikọ na value, nke nọ naanị n'ọba n'etiti ọnụ ọgụgụ na ezigbo nta.
1/2 fractional = 1.50 decimal = 66.7% na-egosi: odds-on. 5/2 = 3.50 = 28.6% na-egosi: odds-against. A 1.50 favourite nke n'ezie na-emenụ 60% oge a bụ njọ azụ; 3.50 outsider nke na-emenụ ihe otu n'atọ oge a bụ azụ mma.