1. 20;33 1/3
2. 33 1/3;20
3. 20;40
4. 40;33 1/3
33 1/3;20
1. 11.11%;10%
2. 10%;11.11%
3. 20%;22.22%
4. 40%;44.44%
11.11\%;10\%
1. 4% profit
2. 4% loss
3. 2% loss
4. 2% profit
4\% loss
1. 24 years
2. 12 years
3. 6 years
4. 18 years
18 years
1. 15 min
2. 30 min
3. 58 min
4. 45 min
58 min
1. 121
2. 120
3. 100
4. 12.1
121
1. 45.44%
2. 44.45%
3. 54.55%
4. 55.54%
44.45\%
1. 5/2
2. 3
3. 7/2
4. 4
5. none of these
7/2
1. S = S
2. (S')' = S
3. S' = X
4. (S')'= X
5. none of the above
(S')' = S
1. 0
2. 1
3. 2
4. 3
5. none of these
1