Paper 1 | Objectives | 45 Questions
WASSCE/WAEC MAY/JUNE
Year: 1997
Level: SHS
Time:
Type: Question Paper
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# | Question | Ans |
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1. |
Express (0.0425 / 2.5) as a fraction A. 17/10,000 B. 17/1,000 C. 17/250 D. 17,100 E. 17/10
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Detailed Solution0.0425/2.5 = 425/25000 = 17/1000 |
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2. |
If P = {3, 5, 6} and Q = {4, 5, 6} then P∩Q equals A. {3, 4} B. {4, 5} C. {4, 6} D. {5, 6} E. {3, 5}
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Detailed SolutionP ∩ Q = {5, 6} |
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3. |
A and B are two sets. The number of elements in A∪B is 49, the number in A is 22 and number in B is 34. How many elements are in A ∩ E? A. 105 B. 27 C. 15 D. 12 E. 7
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Detailed SolutionLet x represent the intersection34 - x + 22 - x + x = 49   - x = 49 - 56; x = 7 |
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4. |
A student found the approximate value of 0.02548 correct to two places of decimal instead of two significant figures. Find the percentage error. A. 0% B. 131/3% C. 15 5/13% D. 2/3% E. 20%
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Detailed Solution0.02548 \(\approxeq\) 0.03 (to 2 decimal places)0.02548 \(\approxeq\) 0.025 (2 sig. figs) Error = 0.03 - 0.025 = 0.005 % error = \(\frac{0.005}{0.025} \times 100%\) = 20% |
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5. |
Simplify log39 + log315 - log35 A. log319 B. log3 C. 3 D. 1 E. o
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Detailed Solutionlog3 (9 x 15)/5 = log327 = 3 |
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6. |
Solve me equation: 2/3 (x + 5) = 1/4(5x - 3) A. 11/7 B. 18/23 C. 3 D. 43/7 E. 7
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Detailed Solution2/3 (x + 5) = 1/4(5x - 3)8x + 40 = 15x - 9 -7x = -49 x = 7 |
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7. |
Which of the following equations has its roots as 4 and -5? A. x2 + 4x - 20 = 0 B. x2 + x + 20 = 0 C. x2 - x + 20 = 0 D. x2 + x - 20 = 0 E. x2 - x - 20 = 0
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Detailed Solution(x - 4)(x + 5) = 0x\(^2\) + 5x - 4x - 20 = 0 x\(^2\) + x - 20 = 0 |
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8. |
Solve the equations: 4x -y = 11; 5x + 2y = 4. A. x = 6, y = 13 B. x = -2, y = -3 C. x = -2, y = 3 D. x = 2, y = -3 E. x = 2, y = 3.
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Detailed Solution4x - y = 11....(1) x 2 8x - 2y = 22....(3)5x + 12y = 4....(2) x 1 5x + 2y = 4....(4) add eqn (3) and (4) 13x = 26 x = 2 4(2) - y = 11 \(\implies\) y = 8 - 11 y = -3. |
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9. |
Make q the subject of the relation t = √pq/r - r2 A. q = rt2/p - r3 B. q = t2/p - r2 C. q = rt/p - r3 D. q = p - r3/rt2 E. q = rt2(p - r3) |
A |
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