A. I,II,III b. II,Iii,IV c. I, III,iv d. I,II,III,iv e. I, III

23. Arifmetik progressiyada _=7, d=5, _S_=25450 bo’lsa, _{ }ni toping?

A) 74 B) 55 C) 39 D) 100 E) 330

24. Cheksiz kamayuvchi geometric progressiyada _ , S=16 bo’lsa, q ni toping?

A) _ B) _ C) _ D) _ E) _