PositiveNaija Q&A Forum

PositiveNaija Q&A Forum is a question-and-answer platform focused on constructive discussions on the development of Nigeria and Nigerians.

We welcome you to post your questions and answers on this Forum accordingly.

Please freely express yourself and we only ask that you keep your posts polite, factual, relevant as well as well-framed. In extreme circumstances, we may remove posts that violate this prescription.

Thank you and looking forward to your contributions.

Nigeria and Nigerians

Please or Register to create posts and topics.

September: Mathematics

12

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.

To win and succeed is to love.
  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

 

To win and succeed is to love.

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

12