37. Dastlabki n ta hadi yig’indisi
1 / 931.O'rtacha
Arifmetik progressiya uchinchi va to’qqizinchi hadlarining yig’indisi 8 ga teng. Shu progressiyaning dastlabki 11 ta hadlari yig’indisini toping.
Mavzu tushuntirish va masalalar yechimi
Videolar: Matematika kursi (YouTube).