Ke ʻimi nei i nā huinahā - 1
Ua kaha ʻia me ka ʻulaʻula ma kēia kaha kiʻi ʻelua mau huinahā 1 x 1 a me hoʻokahi huinahā 2 x 2 me nā ʻaoʻao moe a me nā ʻaoʻao kū.
KA PILI
E huli i ka helu o nā huinahā o nā nui a pau me nā ʻaoʻao moe a me nā ʻaoʻao kū i loko o kēia kiʻikuhi.
HE ʻAHOLAHA
E pāʻani me nā grids nui aʻe. Hiki iā ʻoe ke ʻike i kahi ala ʻōnaehana e helu ai i nā huinaha āpau? Pehea e loli ai kāu pane, inā paha, inā he huinaha ka grid o nā kiko ʻaʻole ia he huinaha?
Notes
KA PILI
ʻO ka lōʻihi o nā ʻaoʻao o nā huinahā hiki ke loaʻa mai 1 a hiki i ka 4.
No kēlā me kēia nui o ka huinahā, e noʻonoʻo i ke kihi hema o luna ma ke ʻano he kūlana hoʻomaka. Hiki iā ʻoe ke hana i nā huinahā āpau o kēia nui ma ka grid ma ka hoʻoneʻe ʻana i kēia huinahā hoʻomaka a puni. Loaʻa iā ʻoe ke koho e hoʻoneʻe iā ia i ka ʻākau a i ʻole i lalo i ka helu i koe o nā kūlana. He mau koho kūʻokoʻa kēia, no laila loaʻa iā ʻoe huinahā o kēlā nui huinahā.
Eia kekahi laʻana, ke kuhi nei ʻoe e helu ana i nā huinahā 1 ma ka 1 ma kēia ʻāpana 4 ma ka 4. Hiki ke hoʻoneʻe ʻia kahi huinahā 1 ma ka 1 ma ke kihi hema o luna i ka 1 a i ʻole 2 i ka ʻākau a me ka 1 a i ʻole 2 i lalo. No laila, aia he 3 mau kūlana hiki ke hana ʻia ma ke ʻano ākea (me ka helu ʻana i ke kūlana mua) a me 3 mau kūlana hiki ke hana ʻia ma ke ʻano kū pololei. No laila, aia he 3 x 3 o kēia mau huinahā 1 ma ka 1.
No ka pilikia grid 4 x 4 mua, hāʻawi kēia i ka helu penei:
- 1 ma ka 1 mau huinahā: 3 x 3 = 9
- 2 ma ka 2 mau huinahā: 2 x 2 = 4
- 3 x 3 mau huinahā: 1 x 1 = 1.
Aia ka huina o 3 x 3 + 2 x 2 + 1 x 1 = 9 + 4 + 1 = 14 mau huinahā hiki.
HE ʻAHOLAHA
No kekahi kiʻikuhi huinaha, ʻo ka huina o nā huinaha ka huina o nā helu huinaha i emi iho ma mua o ka nui o ka kiʻikuhi. No ka laʻana, ʻo kahi kiʻikuhi 7 a 7 e loaʻa iā ia he 36 + 25 + 16 + 9 + 4 + 1 = 91 mau huinaha.
Ua aneane maʻalahi ka helu ʻana i nā kikina huinahā. ʻO ka liʻiliʻi o nā ana ʻelua o ka huinahā e kaupalena i ka nui loa o nā huinahā hiki. E helu iā lākou ma ke ʻano like me ka hihia kikina huinahā. Ma mua o ka hana ʻana i ka hihia maʻamau, e hana wale kākou i hoʻokahi laʻana hoʻohālike.
Manaʻo ʻoe e helu ana i nā huinahā i loko o kahi ʻāpana 5 x 7. No ka mea he 5 wale nō lālani, ʻaʻohe huinahā i ʻoi aku ka nui ma mua o 4 x 4.
- 1 ma ka 1 mau huinahā: 4 x 6 = 24
- 2 ma ka 2 mau huinahā: 3 x 5 = 15
- 3 ma ka 3 mau huinahā: 2 x 4 = 8
- 4 ma ka 4 mau huinahā: 1 x 3 = 3
ʻO ka huina o nā huinahā he 24 + 15 + 8 + 3 = 50.