Core Maths 25

Core Maths 25

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Question 1 of 20

1. Question
In an examination, the sum of the marks obtained by Kofi and Ama was 81 and the difference was 17. If Kofi had a larger mark, find Ama’s mark.
- 27.7%
- 27.5%
- 21.6%
- 17.7%
Correct

Incorrect
Question 2 of 20

2. Question
Find the value of (t – s) from the relations:
$4s-t+1=0 and 2-5s+1=0$
- 2.8
- 2.7
- 2.6
- 2.5
Correct

Incorrect
Question 3 of 20

3. Question
Solve the simultaneous equations: y-x=1 and 2y+3x=7
- X=1, y=2
- X=11, y=2
- X=2, y=2
- X=1, y=23
Correct

Incorrect
Question 4 of 20

4. Question
If 3x-7y=2 and x-2y=4, what is the value of y?
- -10
- 10
- 14
- 24
Correct

Incorrect
Question 5 of 20

5. Question
If 4x+2y=16 and 6x-2y=4, find the value of (x + y)
- 8
- 6
- 4
- 2
Correct

Incorrect
Question 6 of 20

6. Question
Simplify $\sqrt{450}-\sqrt{200}$
- $2\sqrt5$
- $5\sqrt2$
- $5\sqrt5$
- $10\sqrt2$
Correct

Incorrect
Question 7 of 20

7. Question
Simplify $\sqrt{28}+\frac{1}{\sqrt7}$
- $\frac{3}{7}\sqrt7$
- $\frac{9}{7}\sqrt7$
- [latex]\frac{15}{7}\sqrt7[/latex]
- $\frac{15}{7}\sqrt2$
Correct

Incorrect
Question 8 of 20

8. Question
Evaluate $3\sqrt2\left(\frac{3}{\sqrt2}+\sqrt2\right)$
- 12
- 15
- 18
- 24
Correct

Incorrect
Question 9 of 20

9. Question
Find the volume of a cube of side 5 cm.
- $10 cm^3$
- $15 cm^3$
- [latex]25 cm^3[/latex]
- [latex]125 cm^3[/latex]
Correct

Incorrect
Question 10 of 20

10. Question
Kwame and Ama shared an amount of money in the ratio 5:4 respectively. If Kwame had GH¢ 9.00, how much did they share?
- GH¢ 16.20
- GH¢ 36.00
- GH¢ 45.00
- GH¢ 81.00
Correct

Incorrect
Question 11 of 20

11. Question
There are 10 red and 15 green balls in a bag. Find the probability of selecting at random a red ball from the bag.
- $\frac{2}{5}$
- $\frac{5}{2}$
- $-\frac{2}{5}$
- $\frac{12}{5}$
Correct

Incorrect
Question 12 of 20

12. Question
A length of a ribbon is 16.8 m long. How many ribbons 0.36 m long can be cut from it?
- 0.46
- 4.60
- 46
- 460
Correct

Incorrect
Question 13 of 20

13. Question
A refrigerator was sold for GH¢ 200.00 at a loss of 10%. Find the cost price.
- GH¢ 180.00
- GH¢ 190.00
- GH¢ 220.00
- GH¢ 222.22
Correct

Incorrect
Question 14 of 20

14. Question
What is the value of 7 in the number 832713?
- Seven thousand
- Seven hundred
- Seventy
- Seven
Correct

Incorrect
Question 15 of 20

15. Question
If P = {2, 3, 5, 7}and Q = {2, 4, 6, 8}, find P∩Q
- {2}
- {3}
- {4}
- {5}
Correct

Incorrect
Question 16 of 20

16. Question
Which of the following numbers is not an integer?
- -5/4
- -2/3
- 0.5
- 1
Correct

Incorrect
Question 17 of 20

17. Question
How many diagonals are in a rectangle?
- 1
- 2
- 3
- 4
Correct

Incorrect
Question 18 of 20

18. Question
Simplify – 4 (3 – 5) + 10 – 3 (7 + 4) + 30
- – 1
- 15
- 56
- 65
Correct

Incorrect
Question 19 of 20

19. Question
An iron rod 15 m long is divided into 12 equal parts. How long is each part?
- 0.80 m
- 1.25 m
- 1.50 m
- 3.00 m
Correct

Incorrect
Question 20 of 20

20. Question
Convert 42 to a base two numeral.
- $1010010_2$
- $1010101_2$
- $1010100_2$
- $101010_2$
Correct

Incorrect

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