GENERAL MATHEMATICS 2020 QUIZ

1.

What is the name of your Mathematics teacher?
- A.
  
  Mr Ojodun
- B.
  
  Mr Ojodu
- C.
  
  Mr Ojogun
- D.
  
  Mr Ojokun
Correct Answer
A. Mr Ojodun
2.

When did your Mathematics teacher celebrate his birthday in year 2020?
- A.
  
  June 17
- B.
  
  June 18
- C.
  
  June 19
- D.
  
  June 20
Correct Answer
B. June 18
3.

Question 3
- A.
  
  1:4
- B.
  
  1:5
- C.
  
  2:5
- D.
  
  5:2
Correct Answer
C. 2:5

Explanation
The answer 2:5 is the correct ratio because it is the only option where the first number is smaller than the second number. In a ratio, the first number represents one quantity and the second number represents another quantity. The ratio 2:5 indicates that the first quantity is smaller than the second quantity, which is not the case in the other options.

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4.

Express 0.0000407, correct to 2 significant figures
- A.
  
  0.0
- B.
  
  0.00004
- C.
  
  0.000041
- D.
  
  0.0000407
Correct Answer
C. 0.000041

Explanation
The given number, 0.0000407, has 4 significant figures. When rounding to 2 significant figures, we look at the digit after the second significant figure, which is 0. Since the digit after 0 is less than 5, we do not round up. Therefore, the correct answer is 0.000041.

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5.

Question 5
- A.
  
  Iii
- B.
  
  I and ii
- C.
  
  Ii and iii only
- D.
  
  I,ii and iii
Correct Answer
A. Iii
6.

Given that a = log 7 and b = log 2, express log 35 in terms of a and b.
- A.
  
  A + b + 1
- B.
  
  ab - 1
- C.
  
  a - b + 1
- D.
  
  b - a + 1
Correct Answer
C. a - b + 1

Explanation
To express log 35 in terms of a and b, we can use the property of logarithms that states log(ab) = log(a) + log(b).

We know that log 35 = log(7 * 5).

Since a = log 7, we can rewrite log(7 * 5) as log 7 + log 5.

We don't have the value of log 5, but we can express it in terms of a and b by using the property log(ab) = log(a) + log(b).

log 5 = log(2 * 2.5) = log 2 + log 2.5 = log 2 + log(2 * 1.25) = log 2 + log 2 + log 1.25 = 2b + log 1.25.

Therefore, log 35 = log 7 + log 5 = a + 2b + log 1.25.

Since log 1.25 is a constant, we can simplify this expression to a + 2b + C, where C represents log 1.25.

This can further be simplified to a + 2b + 1, as C = 1.

Thus, log 35 can be expressed as a - b + 1.

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7.

A sum of N18,100 was shared among 5 boys and 4 girls with each boy taking N20.00 more than each girl. Find a boy's share.
- A.
  
  N1,820.00
- B.
  
  2,000.00
- C.
  
  N2,020.00
- D.
  
  N2,040.00
Correct Answer
C. N2,020.00

Explanation
Each boy takes N20.00 more than each girl, so we can set up the equation: (boy's share) = (girl's share) + N20.00. Since there are 5 boys and 4 girls, the total amount shared among them is N18,100. We can express this as: 5(boy's share) + 4(girl's share) = N18,100. By substituting the equation from the first statement, we get: 5((girl's share) + N20.00) + 4(girl's share) = N18,100. Solving this equation, we find that the girl's share is N1,820.00. Substituting this back into the first equation, we can find the boy's share to be N2,020.00.

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8.

One factor of 7x²+ 33x−10 is
- A.
  
  7x + 5
- B.
  
  X - 2
- C.
  
  7x - 2
- D.
  
  X - 5
Correct Answer
C. 7x - 2

Explanation
The given expression is a quadratic trinomial. To find a factor, we can use the fact that if a quadratic trinomial can be factored, then the factors will have the form (ax + b)(cx + d), where a and c are the coefficients of the squared term and b and d are the constant terms. In this case, the coefficient of the squared term is 7, and the constant term is -10. To find the factors, we need to find two numbers that multiply to give -10 and add up to 33. The numbers 5 and -2 satisfy these conditions, so the factors are (7x + 5)(x - 2). Therefore, the correct answer is 7x - 2.

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9.

The dimensions of water tank are 13cm, 10cm and 70cm. If it is half-filled with water, calculate the volume of water in litres
- A.
  
  4.55litres
- B.
  
  7.50litres
- C.
  
  8.10litres
- D.
  
  9.55litres
Correct Answer
A. 4.55litres

Explanation
The volume of a rectangular prism can be calculated by multiplying its length, width, and height. In this case, the dimensions of the water tank are given as 13cm, 10cm, and 70cm. Since the tank is half-filled with water, we need to find the volume of half of the tank. The volume of half of the tank can be calculated by dividing the volume of the whole tank by 2. Therefore, the volume of water in litres is (13cm x 10cm x 70cm) / 2 = 4550cm³. Since 1 litre is equal to 1000cm³, the volume of water in litres is 4550cm³ / 1000 = 4.55 litres.

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10.

What is the correct phone number of your Mathematics teacher?
- A.
  
  08028427243
- B.
  
  08024273482
- C.
  
  08028427234
- D.
  
  08028724234
Correct Answer
C. 08028427234

Explanation
The correct phone number of the Mathematics teacher is 08028427234.

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General Mathematics 2020 Quiz

What is the name of your Mathematics teacher?

When did your Mathematics teacher celebrate his birthday in year 2020?

Question 3

Express 0.0000407, correct to 2 significant figures

Question 5

Given that a = log 7 and b = log 2, express log 35 in terms of a and b.

A sum of N18,100 was shared among 5 boys and 4 girls with each boy taking N20.00 more than each girl. Find a boy's share.

One factor of 7x2+ 33x−10 is

The dimensions of water tank are 13cm, 10cm and 70cm. If it is half-filled with water, calculate the volume of water in litres

What is the correct phone number of your Mathematics teacher?

One factor of 7x²+ 33x−10 is