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Neco 2002 Mathematics Past QuestionsQuestion 26:One bag contains 4 white balls and 2 black balls. Another bag contains 3 white balls and 5 black balls, if one ball is drawn from each bag, what is the probability that both are white? A. \(\frac{2}{3}\) B. \(\frac{3}{8}\) C. \(\frac{7}{24}\) D. \(\frac{1}{4}\) E. \(\frac{1}{24}\) Question 27:A quadratic equation with roots -1\(\frac{1}{2}\) and \(\frac{1}{4}\) is A. X2 + 3x + 4 = 0 B. 8x2 + 10x + 3 = 0 C. 8x2 +12x – 3 = 0 D. 8x2 + 10x-3.= 0 E. 8x2 + 12x + 3 = 0 Question 28:What are the factors of 2x\(^2\) - xy - 3y\(^2\) ? A. (2x + 3y)(x + y)2 B. (2x + 3y)(x + y) C. (2x + 3y)(x - y) D. (2x - 3y)(x + y) E. (2x - 3y)(x - y) Question 29:If sin θ = \(\frac{\sqrt{3}}{2}\) and 0 < θ < 180°, what is cos θ ? A. \(\frac{1}{\sqrt{3}}\) B. \(\frac{2}{\sqrt{3}}\) C. \(\frac{1}{2}\) D. \(\frac{\sqrt{3}}{2}\) E. \(\sqrt{3}\) Question 30:Three sets of rice x, y and z are sold for N15.00, N35.00 and N60.00 respectively per kg. It they are mixed in the ratio of 1: 3 : 2, what is the cast per kg of the mixture? A. N45.00 B. N42.50 C. N40.00 D. N35.50 E. N25.80 |
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