week9 :Sequences and Series: Arimetic Progression, Arithmetic Mean, geometrc Progression, Gcometric Mean,

The topic at the page number 195  of the recomended book of Doleiani MP, Wooton W, Becknback EF, Sharron S, "Algcbra and rignometry 1978, Houghuon and Mifrilin.Kaufimann JE. Coliege Algebra and trigonometry, 1978, PWS-Kent Company, Boston. dition), 1986, PWS-Kent Compahy, Boston. Hogg, R. M. & Craig, A. T. "Introduction to Mathematical Statistics