JEE Main 2013Session, Shift 1MathematicsMediumSequence and Series179× since 2002The sum of first 20 terms of the sequence 0.7, 0.77, 0.777,........,isAOption A. 781(179−10−20){7 \over {81}}\left( {179 - {{10}^{ - 20}}} \right)817(179−10−20)BOption B. 79(99−10−20)\,{7 \over 9}\left( {99 - {{10}^{ - 20}}} \right)97(99−10−20)COption C. 781(179+10−20){7 \over {81}}\left( {179 + {{10}^{ - 20}}} \right)817(179+10−20)DOption D. 79(99+10−20){7 \over 9}\left( {99 + {{10}^{ - 20}}} \right)97(99+10−20)CheckSkip · show solution
