COE 9 MATHEMATICS
Subject: Mathematics
Time: 15 mins
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Question 1 of 20
1. Question
- Find the mean of the following set of numbers; 2,6,4,8,3,7.
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Question 2 of 20
2. Question
2) Simplify (7a-3b)-(5a-8b).
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Question 3 of 20
3. Question
3) Find the L.C.M. of 15,25 and 35.
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Question 4 of 20
4. Question
4) Approximate 0.007349 to 3 significant figures.
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Question 5 of 20
5. Question
5) Find the diameter of a circle whose circumference is 44cm.
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Question 6 of 20
6. Question
4. Subtract 111two from 1111two
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Question 7 of 20
7. Question
5. Calculate the simple interest on $650 for 2 years at 6% per annum.
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Question 8 of 20
8. Question
6. A car uses 60 litres of petrol for a journey of 750km. how many litres would be used for a journey of 350km?
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Question 9 of 20
9. Question
7. Convert 1111two to denary.
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Question 10 of 20
10. Question
8. Solve the simultaneous equations: x+2y=1, 2x+5y=4.
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Question 11 of 20
11. Question
11) Solve for x, if 6x+8 = 21+5x.
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Question 12 of 20
12. Question
12. Find the product of the coefficients of x2 and xy in the expansion of (2x-3y)(3x-2y).
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Question 13 of 20
13. Question
13) If 22 is added to a number and then the sum is divided by 2, the result is 6 times the number. Find the number.
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Question 14 of 20
14. Question
14) Twice a certain number y is less than or equal to 6. Find the range of values of the number.
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Question 15 of 20
15. Question
15) The sum of the interior angles of a regular pentagon is
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Question 16 of 20
16. Question
16) Calculate the 4th angle of a quadrilateral if the other angles are 560, 1150 and 1200.
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Question 17 of 20
17. Question
17) A bag contains 16 balls. 6 of them are red and 10 are blue. What is the probability that a ball picked is a blue ball?
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Question 18 of 20
18. Question
18) The volume of a cuboid is 24cm3. if the base is 6cm by 2cm, find the height of the cuboid.
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Question 19 of 20
19. Question
19) A basket contains 40 mangoes, out of which 22 are good. Find the percentage of the mangoes that are bad.
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Question 20 of 20
20. Question
20) The sum of supplementary angles is.
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