Find the sums given below : (i) `7+10 1/2+14+dot\ dot\ dot+84`(ii) `34+32+30+dot\ dot\ dot+10`(iii) `5+(8)+(-11)+dot\ dot\ dot+( 230)`

Find the conjugate of 1/(3+4i)dot

Find the cube of 5 2/7dot

Find the cube of 2/3dot

Find the sum: 25+28+31+\ dot\ +100 (ii) 18+15 1/2+13+\ dot+\ (-49 1/2)

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

Find the number of terms in each of the following APs : (i) 7, 13, 19, . . . , 205 (ii) 18 ,\ 15 1/2,\ 13 ,\ dot\ dot\ dot\ ,\ - 47

Let A = {1, 2, 3, 4, 5, 6} . Insert the appropriate symbol in or !in in the blank spaces:(i) 5... dot dotA (ii) 8 ... A (iii) 0... dot dotA (iv) 4. . dot A (v) 2... dot dotA (vi) 10... A

Find the sum to n terms of the series : 1xx2xx3 + 2xx3xx4 + 3xx4xx5 + dot dot dot

Find the sum to n terms of the series : 1xx2xx3 + 2xx3xx4 + 3xx4xx5 + dot dot dot

Find the sum to n terms of the series : 1xx2xx3 + 2xx3xx4 + 3xx4xx5 + dot dot dot