(2) `-2/3 × 3/5 + 4/2 -3/5 × 1/4`

Add the following fractions: 2 3/5+4/5+\ 1 2/5 (ii) 1 1/4+\ 2 3/4+\ 7 1/4

Compute the indicated products: [a b-b a][a-bb a] (ii) [1-2 2 3][1 2 3-3 2-1] (iii) [2 3 4 3 4 5 4 5 6][1-3 5 0 2 4 3 0 5]

Evaluate: (i) 2/(-3) + -4/9 , (ii) =1/2 + -3/4 , (iii) 7/-9 + -5/6 (iv) 2 + -3/4 , (v) 3 + -5/6 , (vi) -4 + 2/3

Find five rational numbers between. (i) 2/3 and 4/5 (ii) (-3)/2 and 5/3 (iii) 1/4 and 1/2

Solve (i) 2 - 3/5 (ii) 4 + 7/8 (iii) 3/5 + 2/7 (iv) 9/11 - 4/5 (v) 7/10 + 2/5 + 3/2 (vi) (2) 2/3 + (3) 1/2 (vii) (8) 1/2 - (3) 5/8

Simplify: (a)1 3/4xx 2 2/5xx 3 4/7 (b) 5 5/9-: 3 1/3

Solve (a) 2/3 + 1/7 (b) 3/10 + 7/15 (c) 4/9 + 2/7 (d) 5/7 + 1/3 (e) 2/5 + 1/6 (f) 4/5 + 2/3 (g) (3/4) (1/3) (h) (5/6) (1/3) (1) 2/3 + 3/4 + 1/2 (1) 1/2 + 1/3 = 1/6 (k) (1) 1/3 + (3) 2/3 (1) (4) 2/3 +(3) 1/4 (m) ((16)/5))(7/5)

If int1/(5+4sinx)\ dx=Atan^(-1)(Btanx/2+4/3)+C , then A=2/3,\ \ B=5/3 (b) A=1/3,\ \ B=2/3 (c) A=-2/3,\ \ B=5/3 (d) A=1/3,\ \ B=-5/3

Name the octants in which the following points lie: (1, 2, 3) , (4, -2, 3) , (4, -2, -5) , (4, 2, -5) , ( -4, 2,-5) , ( -4, 2, 5) , (-3, -1, 6) , (2, -4, -7) .

If the lines (x+4)/3=(y+6)/5=(z-1)/(-2) and 3x-2y+z+5=0=2x+3y+4z-k are coplanar, then k= (a) -4 (2) 3 (3) 2 (4) 4 (5) 1