Find the following sums : (i) ` 12 + 13 + 14 + …+ 37` (ii) ` 18^(2) + 19^(2) + 20 ^(2) +…+ 47^(2)` (iii)` 2^(3) + 4^(3) + 6^(3) +… + 18^(3) `

Find the following sums : (i) 5 + 6 + 7 +…+ 100 (ii) 15^(2) + 16^(2) +…+ 30^(2) (iii) 4^(3)+ 8^(3) + 12^(3) +…+ 40^(3)

Find the following sums : (i) 5 + 6 + 7 +…+ 100 (ii) 15^(2) + 16^(2) +…+ 30^(2) (iii) 4^(3)+ 8^(3) + 12^(3) +…+ 40^(3)

Divide: (i) 6x^(5) + 18 x^(4) - 3x^(2) by 3x^(2) (ii) 20 x^(3) y + 12 x^(2) y^(2) - 10 xy by 2xy

Find the quotient and remainder of the following. (i) (4x^(3) + 6x^(2) -23x + 18) + (x+3) (ii) (8y^(3) -16y^(2) +16y -15)+( 2y-1) (iii) ( 8x^(3) -1)+( 2x-1) (iv ) (-18z +14z^(2) +24z^(3) + 18) +( 3z+4)

Find which of the following are in proportions (i) 18, 16, 6 , 12 (ii) 6,2,4,3

Find which of the following are in proportions (i) 18, 16, 6 , 12 (ii) 6,2,4,3

Find the mode of the following data. 20 ,3, 7 ,13 , 3 , 6 , 7 ,19 , 15 , 7 , 18 ,3 .

Find : (a) 1/2 of (i) 24 (ii) 46 (b) 2/3 of (i) 18 (ii) 27 (c) 3/4 of (i) 16 (ii) 36 (d) 4/5 of (i) 20 (ii) 35