Find the sum of the series : `5+13+21++181.`

Find the sum of the series 3 + 7 + 13 + 21 + 31 + … to n terms . Find the sun when n=20

Find the sum of the series 3 + 7 + 13 + 21 + 31 + … to n terms . Find the sun when n=20

Find the range of the series : 15, 18, 13, 16, 14, 13, 14, 19, 21.

3.2IDENTITIES 56. The value of (a18 + a-18) (as - a-18)(a + a-)(a2 + a 2) is (A) (a + a-') (B)(a-a-') (C)(A) (a? - a) The sum of the series 5 + 13 + 21 + .......+ 181 is (D) (a2-a-12) CZ

Find the sum of the series : 3+5+7+6+9+12+9+13+17+\ to 3n terms.

Find the sum of the series: 3+5+7+6+9+12+9+13+17+rarr3n terms.

Find the sum of the series 1/1.3+2/(1.3.5)+3/(1.3.5.7) ...upto infinity

Find the sum of the series (5)/(13)+(55)/(13)^2+(555)/(13)^2+(5555)/((13)^4) …………..up to prop .

Find the sum of the first n terms of the series : 3 + 7 + 13 +21 + 31 +.....

Find the sum of the first n terms of the series : 3 + 7 + 13 +21 + 31 +dot dot dot