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Officer-2019 [MCQ]

11. If Y/x = 1/3 and x + 2y = 10 then x is__

[Officer-2019 [MCQ] : 2019]

1. 2

2. 3

3. 4

4. 6

Answer

12. How many real roots does the polynomial 2x^3 + 8x – 7 have?

[Officer-2019 [MCQ] : 2019]

1. None

2. One

3. Two

4. Three

Answer

13. If xy = 2 and xy^2 = 8, what is the value of x?

[Officer-2019 [MCQ] : 2019]

1. 4

2. 2

3. ½

4. 8

Answer

14. 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

15. 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