Tastratijit n 5 n yidularen

Alugen akken yettwaglem

Sersem $5 ɣef yal yiwen seg semmus n sin yizirigen ur nesɛi ara uṭṭunen icerken, i yeṭṭfen 30 n texxaminibenkanTaxxamtYiwet seg 37 n texxamin s wuṭṭunen ɣef uqerru yettezzin. Daɣen: slot, cup.Ɣer akk → tiwrupiyin. Semmus n rrhun-a yellan deg yiwet n tikkelt sqamen $25 i yal tuzzya, ihi «$5 i yal tuzzya» yezmer kan ad yini $5 i yal rrehn. Asuget n yal rrehn s mraw deffir yiwet n lexsara yettarra yal rrehn d $50; amecwar i d-iteddun yesra alugen-is yettwabedren weḥd-s.

Rrehn agejdan d usnerni yettwasumren, s wazalen-nsen swaswa

LexlaṣidrimenLexlaṣAyen i d-yettak rrehn i yerbḥen, yettwanna «X ɣef 1» nnig rrehn i d-yettuɣalen.Ɣer akk → amagnu n sin yizirigen yettarra leḥsab-a d afessas.

Amedya s leḥsab

Deg uswir agejdan, yiwen seg semmus n rrhun ɣef sin yizirigen yerbeḥ, yettarra-d $30 s rrehn-is n $5. Kkset tafelwitibenkanTafelwit n rrhunAẓeṭṭa n rrhun yettwarun ɣef ṭṭabla. Daɣen: ṭṭabla, tajellabt, aceṭṭiḍ.Ɣer akk → meṛṛa n $25, ad tawim +$5; ukkuẓ n rrhun i yexsren d $20. Uṭṭun ur nettwaṭṭef ara yessexsar akk $25. Ma yeḍfer umurar asnerni-nni yettwabedren s mraw n tikkal, semmus n rrhun i d-iteddun d $50 yal yiwen, mačči $300 meṛṛa; yiwen n rrehn dɣa yettrebbiḥ $300 s rrehn mgal $250 yettwarhen, ačuran +$50.

Ssuma d lxeṭṛ

Taprubabilit n ugmuḍ s rrbeḥ deg uswir agejdan d 30/37 = 81,081%, tettwaɛeddel s sa n lexsara n $25. Azal-is yettwaṛǧantusnaktAzal yettwaṛǧanAlemmas n ugmuḍ n yal rrehn deg uɣawas aɣezfan. −1/37 n rrehn i yal rrehn amagnu awrupi.Ɣer akk → d (30 × 5 − 7 × 25) / 37 = −25/37. Asuget s mraw yettɣamar s $250 deffir yiwet kan n lexsara. Taferkit nniḍen s tnac n tikkal tesseqdac $60 ɣef yal rrehn, $300 meṛṛa, tettak +$60 ačuran ɣef ugmuḍ yettwaṭṭfen. Ula d yiwet seg snat n tferkiwin ur tettbeddil ara lmaziyya tawrupit n 2,70%.

Isteqsiyen