1. 63

2. 100

3. 110

4. 140

5. none of these

1. 1

2. 2

3. 3

4. 8

5. none of the above

1. 1777 meters

2. 1822 meters

3. 400 meters

4. 1400 meters

5. none of the
above

1. 29

2. 34

3. 36

4. 52

5. none of these

1. {2,3,4} ⊆A implies that 2∈A and {3,4} ⊆A.

2. {2,3,4} ∈A and {2,3} ∈B implies that{4} ⊆A?B

3. AB⊇ {2,3,4}implies
that{2,3,4} ⊆A and {2,3,4} ⊆B.

4. A?B⊇ {3,4}
and {1,2} ⊆B implies that {1,2,3,4} ⊆A∪ B

5. none of these