1. 12: 13
2. 1/12: 1/13
3. 4:9
4. 2:3
4:9
1. 49/4
2. 4/49
3. 4
4. ¼
49/4
1. 2
2. 6
3. 8
4. -2
6
1. a < 0, b < 0
2. a > 0, b > 0
3. a > 0, b < 0, |a| < |b|
4. a > 0, b < 0, |a| > |b|
a < 0, b < 0
1. zero
2. 1
3. -1
4. abc
1
1. 120 litres
2. 240 litres
3. 180 litres
4. 60 litres
240 litres
1. 39.2 kmph
2. 63 kmph
3. 42 kmph
4. None of these
42 kmph
1. 7
2. 64
3. 56
4. cannot be determined
56
1. 18 seconds
2. 20 seconds
3. 19.25 seconds
4. 23.33 seconds
23.33 seconds
1. 35
2. 15
3. 29
4. 31
31