ISSB - Pak Navy Officer Selection Mathematics Algebra — Set 2

1. Question 1

   Q1. If x/2 + 3 = 8, x is:

   • A) 8
   • B) 10
   • C) 12
   • D) 14

   Answer: 10

   Explanation: Subtract 3 to get x/2=5. Multiply by 2 to get x=10. Work each step carefully; ISSB math rewards accuracy under time pressure.

2. Question 2

   Q2. If 3x + 5 = 20, then x equals?

   • A) 3
   • B) 5
   • C) 7
   • D) 15

   Answer: 5

   Explanation: Subtract 5 from both sides to get 3x equals 15 so x is 5.

3. Question 3

   Q3. If 2x - 7 = 11, then x equals?

   • A) 7
   • B) 9
   • C) 11
   • D) 18

   Answer: 9

   Explanation: Add 7 to get 2x equals 18 so x is 9. Work each step carefully; ISSB math rewards accuracy under time pressure.

4. Question 4

   Q4. If x² = 49, positive x equals?

   • A) 6
   • B) 7
   • C) 8
   • D) 49

   Answer: 7

   Explanation: Square root of 49 is 7 when x is positive. Work each step carefully; ISSB math rewards accuracy under time pressure.

5. Question 5

   Q5. If 5(x + 2) = 35, then x equals?

   • A) 5
   • B) 7
   • C) 9
   • D) 11

   Answer: 5

   Explanation: Divide by 5 to get x plus 2 equals 7 so x is 5.

6. Question 6

   Q6. If 4x - 3 = 2x + 9, then x equals?

   • A) 4
   • B) 5
   • C) 6
   • D) 7

   Answer: 6

   Explanation: Subtract 2x and add 3 to get 2x equals 12 so x is 6.

7. Question 7

   Q7. Square root of 144?

   • A) 10
   • B) 11
   • C) 12
   • D) 14

   Answer: 12

   Explanation: Twelve times twelve equals one hundred forty four. Work each step carefully; ISSB math rewards accuracy under time pressure.

8. Question 8

   Q8. If x + 8 = 15, x equals?

   • A) 5
   • B) 6
   • C) 7
   • D) 8

   Answer: 7

   Explanation: Subtract 8 from 15 to get x equals 7. Work each step carefully; ISSB math rewards accuracy under time pressure.

9. Question 9

   Q9. If 4x = 28, x equals?

   • A) 4
   • B) 6
   • C) 7
   • D) 8

   Answer: 7

   Explanation: Divide both sides by 4 to get x equals 7. Work each step carefully; ISSB math rewards accuracy under time pressure.

10. Question 10

    Q10. If x/3 = 5, x equals?

    • A) 8
    • B) 12
    • C) 15
    • D) 18

    Answer: 15

    Explanation: Multiply both sides by 3 to get x equals 15. Work each step carefully; ISSB math rewards accuracy under time pressure.

11. Question 11

    Q11. If x² - 9 = 0, positive x?

    • A) 2
    • B) 3
    • C) 4
    • D) 9

    Answer: 3

    Explanation: Positive square root of 9 is 3. Work each step carefully; ISSB math rewards accuracy under time pressure.

12. Question 12

    Q12. If 2x + 1 = 3x - 4, x equals?

    • A) 3
    • B) 4
    • C) 5
    • D) 6

    Answer: 5

    Explanation: Rearrange to x equals 5. Work each step carefully; ISSB math rewards accuracy under time pressure.

13. Question 13

    Q13. If 2x + 8 = 22, then x equals?

    • A) 5
    • B) 6
    • C) 7
    • D) 8

    Answer: 7

    Explanation: Subtract 8 to get 2x equals 14 so x is 7. Work each step carefully; ISSB math rewards accuracy under time pressure.

14. Question 14

    Q14. If 4x - 12 = 28, then x equals?

    • A) 8
    • B) 9
    • C) 10
    • D) 11

    Answer: 10

    Explanation: Add 12 to get 4x equals 40 so x is 10. Work each step carefully; ISSB math rewards accuracy under time pressure.

15. Question 15

    Q15. If x/3 + 2 = 7, then x equals?

    • A) 12
    • B) 15
    • C) 18
    • D) 21

    Answer: 15

    Explanation: Subtract 2 and multiply by 3 to get x equals 15. Work each step carefully; ISSB math rewards accuracy under time pressure.

16. Question 16

    Q16. If 3(x - 4) = 15, then x equals?

    • A) 7
    • B) 8
    • C) 9
    • D) 10

    Answer: 9

    Explanation: Divide by 3 to get x minus 4 equals 5 so x is 9.

17. Question 17

    Q17. If 5x + 3 = 2x + 18, then x equals?

    • A) 3
    • B) 4
    • C) 5
    • D) 6

    Answer: 5

    Explanation: Subtract 2x and 3 to get 3x equals 15 so x is 5.

18. Question 18

    Q18. If 7x - 5 = 30, then x equals?

    • A) 4
    • B) 5
    • C) 6
    • D) 7

    Answer: 5

    Explanation: Add 5 to get 7x equals 35 so x is 5. Work each step carefully; ISSB math rewards accuracy under time pressure.

19. Question 19

    Q19. If x² - 9 = 0, positive x equals?

    • A) 2
    • B) 3
    • C) 4
    • D) 9

    Answer: 3

    Explanation: x squared equals 9 so positive x is 3. Work each step carefully; ISSB math rewards accuracy under time pressure.

20. Question 20

    Q20. If 2x + 3y = 13 and x = 2, then y equals?

    • A) 2
    • B) 3
    • C) 4
    • D) 5

    Answer: 3

    Explanation: Substitute x equals 2 to get 4 plus 3y equals 13 so y is 3.