 <translate> Ọ bụrụ na ugbu a e nwere agụ iyi iri na ise n'ọdọ mmiri ahụ, n'ime afọ abụọ, a ga-enwe agụ iyi iri na ise * abụọ = iri atọ. N'ime afọ abụọ ọzọ, ọnụ ọgụgụ agụ iyi ndị dị n'ọdọ mmiri ahụ ga-amụba okpukpu abụọ ruo agụ iyi 2 * 30 = 60. N'ime afọ abụọ ọzọ, ọnụ ọgụgụ agụ iyi ndị dị n'ọdọ mmiri ahụ ga-amụba okpukpu abụọ ruo agụ iyi 2 * 60 = 120. Ọ bụrụ na mgbe afọ isii gachara, e nwere nnụnụ swans dị otu narị na iri abụọ n'ọdọ mmiri ahụ, n'ime afọ asatọ, ugboro abụọ, a ga-enwe nnụnụ swans dị narị abụọ na iri abụọ. N'ime afọ abụọ ọzọ, nke bụ afọ 10, a ga-enwe 2 * 240 = 480 swans n'ọdọ mmiri ahụ. Azịza ikpeazụ ya bụ: 480. <hau> Idan a halin yanzu akwai swans 15 a cikin tafkin, a cikin shekaru biyu za a sami swans 15 * 2 = 30. A cikin wasu shekaru biyu, adadin swans a cikin tafkin zai ninka zuwa 2 * 30 = swans 60. A cikin wasu shekaru biyu, adadin swans a cikin tafkin zai ninka zuwa 2 * 60 = swans 120. Idan bayan shekaru 6 akwai swans 120 a cikin tafkin, a cikin shekaru takwas sau 2 * 120 = 240 swans. A cikin wasu shekaru biyu, wanda shine shekaru 10, za a sami 2 * 240 = 480 swans a cikin tafkin. Amsar ƙarshe: 480. 