Which ratio is larger in the following pairs? (i) 3:4 or 9:16              (ii)  15:16  or  24: 25 (iii) 4:7  or  5:8              (iv)  9:20  or  8:13 (v) 1:2 or 13:27

Which ratio is larger in the following pairs? 3:4\ or\ 9: 16 (ii) 15 : 16\ or\ 24 : 25

Which ratio is larger in the following pairs? (i) 4:7\ or\ 5:8 (ii) 9: 20\ or\ 8: 13 (iii) 1:2\ or\ 13 : 27

Which of the two rational numbers is greater in each of the following pairs? (i) 3/-7 or 1/7 , (ii) 11/(-18) or -5/18 , (iii) 7/10 or -9/10 (iv) 0 or -3/4 , (v) 1/12 or 0, (vi) 18/(-19) or 0 (vii) 7/8 or 11/16 , (viii) 11/-12 or -10/11 , (ix) -13/5 or -4 (x) 17/(-6) or -13/4 , (xi) 7/(-9) or -5/8 , (xii) -3/(-8) or 5/9

Which ratios are in the simplest from ? a . 1:5 b. 9:15 c. 5:13 d. 16:4

Write each of the following as percent: (i) 13: 75 (ii) 15: 16 (iii) 0.18 (iv) 7/(125)

Which number in each of the following pairs is larger? (i) 3,\ -4 (ii) -12,\ -8 (iii) 0, 7 (iv) 12 ,\ -18

Which number in each of the following pairs is smaller? (i) 0,\ -4 (ii) -3,\ 12 (iii) 8,\ 13 (iv) -15 ,\ -27

Locate the following points (i) (1,-1,3) " " (ii) (-1,2,4) (iii) (-2,-4,-7) " " (iv) (-4,2,-5)

Find the square root of the following : (i) 3-4i (ii) 4+6isqrt(5) (iii) -i (iv) 8i (v) -7+24i (vi) -24- 10i

Simplify the following : (i) 1/2+25/27" (ii) "15""13/20-12""3/4" (iii) "2""3/14-1""4/35