A ratio equivalent to `2:5` is
(a)`6: 15`
(b) `4:5`
(c) `5:2`
(d) `5:4`

A ratio equivalent to 2:3 is (a) 4:3 (b) 2:6 (c) 6:9 (d) 10:9

A fraction equivalent to (45)/(105) is (a) 6/(14) (b) 4/7 (c) 5/7 (d) 7/5

The fraction equivalent to 1 2/3 is (a) (10)/3 (b) 3/5 (c) (10)/6 (d) 6/(10)

Which of the following is a fraction equivalent to 2/3\ ? (a) 4/5 (b) 8/6 (c) (10)/(25) (d) (10)/(15)

If 5/(12) is equivalent to x/3, then x= (a) 5/4 (b) 4/5 (c) 5/3 (d) 3/5

If the volumes of two cones are in the ratio 1:4 and their diameters are in the ratio 4:5, then the ratio of their heights, is (a) 1:5 (b) 5:4 (c) 5:16 (d) 25:64

If the volumes of two cones are in the ratio 1:4 and their diameters are in the ratio 4:5, then the ratio of their heights, is (a) 1:5 (b) 5:4 (c) 5:16 (d) 25:64

If (45)/(60) is equivalent to 3/x , then x= (a) 5 (b) 4 (c) 6 (d) 20

The ratio 384:480 in its simplest form is (a) 3:5 (b) 5:4 (c) 4:5 (d) 2:5

Let A={2,\ 3,\ 4,\ 5,\ .......\ 17 ,\ 18} . Let ' ' be the equivalence relation on AxxA , cartesian product of A with itself, defined by (a ,\ b)(c ,\ d) iff a d=b c . Then, the number of ordered pairs of the equivalence class of (3, 2) is (a) 4 (b) 5 (c) 6 (d) 7