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September: Mathematics

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Welcome to the September 2021 PositiveNaija Science Quiz!

Date: 26th September, 2021 | Time: 9:00 pm - 9:05 pm

The 15 Questions will be updated on this same post at the stated date and time with replies (answers) by participants to follow accordingly.

Thank you.

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  1. In algebra, the use of alphabets such as a, b, c denotes
    1. Operational signs
    2. Constants
    3. Any numerical value
    4. Polynomial

 

  1. The process of expressing an algebraic expression in terms of its factors is called:
    1. Decimals
    2. Polynomial
    3. Factorization
    4. None of the above

 

  1. (a + b)2 – (a – b)2 is equal to
    1. 2ab
    2. a2 – b2
    3. 4ab
    4. a2 + b2

 

  1. The arithmetic mean between -4 and 12 is
    1. 4
    2. -4
    3. 5
    4. 3

 

  1. The most frequent occurring observation in the data is called:
    1. Mean
    2. Median
    3. Mode
    4. Standard deviation

 

  1. A matrix with only one (1) column is called:
    1. Square matrix
    2. Soft matrix
    3. Identical matrix
    4. None of the above

 

  1. The unit of ratio is:
    1. cm
    2. No unit
    3. Inches
    4. Radians

 

  1. The value of mile in terms of kilometers is
    1. 1 mile = 2 km
    2. 1 mile = 1.6 km
    3. 1 mile = 2.8 km
    4. 1 mile = 3.6 km

 

  1. The value of Acres ‘A’ in terms of Hectares ‘H’ is
    1. A = 0.5 H approx.
    2. A = 1.4 H approx.
    3. A = 2 H approx.
    4. A = 0.4 H approx.

 

  1. The range of R = {(0, 2), (2, 4), (3, 4), (4, 5)} is:
    1. {0, 2, 4, 5}
    2. {0, 2, 3, 4}
    3. {2, 4, 5}
    4. {3, 4, 5}

 

  1. The scientific form of 79.69 is:
  1. 796.9 x 10
  2. 7.969 x 10
  3. 79.69 x 10
  4. None of the above

 

  1. The decimal form of 453.5 x 10-6 is:
    1. 0.04535
    2. 4535
    3. 0.0004535
    4. 45.35

 

  1. An airplane carries 500 passengers; 45% are men, 20% are children. The number of women in the airplane is:
    1. 175
    2. 150
    3. 166
    4. 180

 

  1. There are 480 students in a school; 210 out of them are boys. The ratio of girls to the boys is:
    1. 5 : 11
    2. 7 : 3
    3. 7 : 9
    4. 9 : 7

 

  1. The decimal form of 5% up to 3 decimals is:
    1. 0.5
    2. 0.05
    3. 0.005
    4. 5

 

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1. A

2. C

3. B

4. D

5. C

6. A

7. B

8. D

9. B

10. B

11. D

12. C

13. A

14. C

15. C

1 c

2 c

3 b

4 a

5 b

6 d

7 c

8 a

9 a

10 a

11 b

12 c

13 c

14 c

15 c

1 B

2 C

3 C

4 A

5 C

6 D

7 B

8 B

9 C

10 D

11 B

12 C

13 D

14 C

15 C

1.c
2.c
3.c
4.a
5.c
6.d
7.b
8.d
9.c
10.b
11.b
12.c
13.a
14.d
15.b

1.b

2.c

3.c

4.a

5.c

6.d

7.b

8.b

9.d

10.a

11.b

12.c

13.a

14.a

15.c

1. C

2. C

3. C

4. A

5. C

6. D

7. B

8. D

9. A

10. C

11. B

12. C

13. A

14. B

15. A

 

1.C

2.C

3.a

4.a

5.c

6.d

7.b

8.d

9.d

10.c

11.b

12.c

13.a

14.d

15.c

1. B
2. C
3. A
4. A
5. C
6. D
7. B
8. B
9. D
10. A
11. B
12. C
13. A
14. D
15. B
Ayodeji Olowolagba

1 B

2. B

3 C

4 B

5 C

6 D

7 B

8 B

9 C

10 B

11 B

12 C

13 A

14 c

15 b

1 c

2 c

3 d

4 d

5 c

6 d

7 b

8a

9 a

10 c

11 b

12 c

13 a

14 d

15 c

1.c
2.c
3.c
4.d
5.c
6.b
7.b
8.b
9.d
10.a
11.b
12.c
13.a
14.d
15.b

1 B

2. B

3 C

4 B

5 C

6 D

7 B

8 B

9 C

10 B

11 B

12 C

13 A

14 c

15 b

1c

2c

3c

4d

5c

6d

7b

8b

9a

10d

11a

12c

1b

2a

3b

A

C

A

B

C

E

A

1. D

2. B

3. D

4. A

5. C

6. B

7. B

8. B

9. B

10. C

11. B

12. C

13. A

14. D

15. D

1c

2c

3c

4.a

5. C

6. D

7. B

8. B

9. A

10 c

11. B

12. C

13. A

14 a15 b

1b

2a

3b

A

C

A

B

C

E

A

1b

2a

3b

A

C

A

B

C

E

A

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