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Officer-2019 [MCQ]

46. If a -1/a = 2 what is a^3 – 1/a^3?

[Officer-2019 [MCQ] : 2019]

1. 16

2. 10

3. 14

4. 12

Answer

47. The three sides of a triangle are x + 1, 2x – 1 and 2x + 1 respectively and the perimeter is 26 cm. The length of the smallest side is—

[Officer-2019 [MCQ] : 2019]

1. 5 cm

2. 3 cm

3. 4 cm

4. 7 cm

Answer

48. There are 10 true false questions in an examination. These questions can be answered in__

[Officer-2019 [MCQ] : 2019]

1. 20 ways

2. 100 ways

3. 2^10 ways

4. 1024 ways

Answer

49. If two fair coins are flipped, what is the probability that one will come up heads and the other tails?

[Officer-2019 [MCQ] : 2019]

1. 1/4

2. ⅓

3. ½

4. 3/4

Answer

50. If the diagonal of a square measures 16√2 cm, what is the area of the square in sq. cm?

[Officer-2019 [MCQ] : 2019]

1. 32√2

2. 64√2

3. 128

4. 256

Answer