Whakarāpopototia te tuhinga:  Ko te raruraru pāngarau i hangaia mō ngā tamariki 14 tau te pakeke i pōhēhē ai te iwi huri noa i te ao. Mo te hunga kihai i taea te mahi i nga tohu whakamataku i hangaia hei arahi ia ratou ki te ra whanau o Cheryl, ko te whakautu ko te 16 o Hurae. Ko te hunga i āhei ki te whakaaro i a rātou ki tēnei whakautu, i whai i tētahi raupapa o ngā kaupae arorau i āhei ai rātou ki te whakakore i ētahi atu rā i hoatu hei wāhanga o te pātai. Ko te pātai, 'Ahea te rā whānau o Cheryl?' tētahi o ngā pātai e 25 i whakatakotoria ki te Singapore and Asian Schools Math Olympiad. I te tīmatanga, he mea kāore e taea te whakautu ki te kore he mōhiohio atu, engari ko te whakaahua ko te tikanga i whakamahia hei mahi i te reira. Ko te pātai, 'Ahea te rā whānau o Cheryl?' tētahi o ngā pātai e 25 i whakatakotoria ki te Singapore and Asian Schools Math Olympiad. I pātai: Kua piri a Albert rāua ko Bernard ki a Cheryl, ā, e hiahia ana rātau kia mōhio i te rā whānau o Cheryl. Ka hoatu e Cheryl ki a rātou he rārangi o ngā rā e 10 pea: Mei 15, Mei 16, Mei 19, Hune 17, Hune 18, Hōngongoi 14, Hōngongoi 16, Akuhata 14, Akuhata 15 me Akuhata 17. Na ka korerotia e Cheryl ki a Albert raua ko Bernard te marama me te ra o tana ra whanau. Ka pātai te pātai: Kua piri a Albert rāua ko Bernard ki a Cheryl, ā, e hiahia ana rātau ki te mōhio i te rā whānau o Cheryl. Ka hoatu e Cheryl ki a rātau he rārangi o te 10 o ngā rā e taea ana. Mei 15, Mei 16, Mei 19 ngā rā. Hune 17, Hune 18. He aha te take? Hōngongoi 14, Hōngongoi 16. Akuhata 14, Akuhata 15, Akuhata 17. Na ka korerotia e Cheryl ki a Albert raua ko Bernard te marama me te ra o tana ra whanau. Albert: Kāore au i te mōhio ki te rā whānau o Cheryl, engari e mōhio ana au kāore a Bernard i te mōhio. Bernard: I te tīmatanga kāore au i te mōhio ki te rā whānau o Cheryl, engari ināianei kua mōhio au. Albert: Katahi ano ahau ka mohio ki te ra o te ra whanau o Cheryl. Āhea te rā whānau o Cheryl? Ka mea a Albert: 'Kāore au e mōhio ki te rā whānau o Cheryl, engari e mōhio ana au kāore a Bernard i te mōhio. Ka mea a Bernard: 'I te tīmatanga, kāore au i te mōhio ki te rā whānau o Cheryl, engari ināianei kua mōhio au.' Ka mea a Albert: 'Kei te mōhio hoki au ki te rā whānau o Cheryl.' Kia tae ai ki te whakautu, ka taea te mahi i roto i te mōhiohio...
Ko te huinga pāngarau mō ngā tamariki tekau mā whā tau te pakeke, i whakararuraru i ngā tāngata huri noa i te ao. Ka whakamahia e te pātai te whakaaro arorau hei whakakore i ngā rā katoa haunga tētahi. I whakaturia i roto i te Singapore me te Ahia Schools Maths Olympiads (SASMO) I puta he tautohetohe nui i runga ipurangi - engari ko te whakautu tika ko te 16 o Hurae.