Mathematics Past Questions

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3191

Two fair dice are tossed together once. What is the probability of getting a total of at least 9 from the outcome?

A. \(\frac{1}{9}\)
B. \(\frac{1}{6}\)
C. \(\frac{5}{18}\)
D. \(\frac{1}{3}\)
E. \(\frac{13}{18}\)

View Answer & Discuss (2) NECO 2005

3192

If 2x : ( x + 1) = 3 : 2, what is the value of x?

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

View Answer & Discuss NECO 2005

3193

If y\(^2\)+ 14y + k is a perfect square, then k =

A. 4
B. 7
C. 28
D. 49
E. 196

View Answer & Discuss (2) NECO 2005

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3194

Twenty girls and y boys sat on an examination. The mean marks obtained by the girls and boys were 52 and 57 respectively. if the total score for both girls and boys was 2750, find y.

A. 51
B. 48
C. 30
D. 25
E. 18

View Answer & Discuss (1) NECO 2008

3195

A sector of angle 120° is cut out from a circle of radius 13.5cm. what area of the circle is remaining ? (π = \(\frac{22}{7}\))

A. 14.1cm²
B. 95.5cm²
C. 190.9cm²
D. 381.9cm²
E. 763.7cm²

View Answer & Discuss (7) NECO 2008

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