Mathematics Past Questions

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2866

A bag contains 4 red and 6 black balls of the same size. If the balls are shuffled briskly and two balls are drawn one after the other without replacement, find the probability of picking balls of different colours

A. \(\frac{8}{15}\)
B. \(\frac{13}{25}\)
C. \(\frac{11}{15}\)
D. \(\frac{13}{15}\)

View Answer & Discuss WAEC 2012

2867

Which of these statements about y = \(\sqrt{8m}\) is correct?

A. log y = log 8 x log \(\sqrt{m}\)
B. log y = 3 log 2 x \(\frac{1}{2}\) log m
C. log y = 3 log 2 - \(\frac{1}{2}\) log m
D. log y = \(\frac{3}{2}\) log 2 + \(\frac{1}{2}\) log m

View Answer & Discuss (2) WAEC 2012

2868

If x + 0.4y = 3 and y = \(\frac{1}{2}\)x, find the value of (x + y)

A. 1\(\frac{1}{4}\)
B. 2\(\frac{1}{2}\)
C. 3\(\frac{3}{4}\)
D. 5

View Answer & Discuss (1) WAEC 2012

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2869

Express 3 - [\(\frac{x - y}{y}\)] as a single fraction

A. \(\frac{3xy}{y}\)
B. \(\frac{x - 4y}{y}\)
C. \(\frac{4y - x}{y}\)
D. 3 - \(\frac{x - y}{y}\)

View Answer & Discuss (1) WAEC 2012

2870

If p = {prime factors of 210} and Q = {prime less than 10}, find p \(\cap\) Q

A. {1,2, 3}
B. {2, 3, 5}
C. {1, 3, 5,7}
D. {2,3,5,7}

View Answer & Discuss WAEC 2012

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