40th Bcs Preliminary

16.

1. a > 0, a = 1

1

2. a > 1, a ≠ 0

2

3. a < 0, a ≠ 1

3

4. a > 0, a ≠ 1

4
Answer
17.

1. 90°

1

2. 35°

2

3. 55°

3

4. 45°

4
Answer
18.

1. -1

1

2. 1

2

3. 0

3

4. ½

4
Answer
19.

1.

1

2.

2

3.

3

4.

4
Answer
20.

1.

1

2.

2

3.

3

4.

4
Answer