Mathematics JAMB Past Questions

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1311

The area of the curved surface of the cone generated by the sector of a circle radius 6cm and arc length 22cm is (\(\pi\) = \(\frac{22}{7}\))

A. 58 sq.cm
B. 34 sq.cm
C. 132 sq.cm
D. 77 sq.cm
E. 66 sq.cm

View Answer & Discuss (3) JAMB 1982

1312

The square base of a pyramid of side 3cm has height 8cm. If the pyramid is cut into two parts by a plane parallel to the base midway between the base and the vertex, the volumes of the two sections are

A. (21cm³, 3cm³)
B. (24cm³, 3cm³)
C. (24cm³, 21cm³)
D. (72cm³, 9cm³)
E. (63cm³, 9cm³)

View Answer & Discuss (1) JAMB 1982

1313

Simplify f\(^{\frac{1}{2}}\)g\(^2\)h\(^{\frac{1}{3}}\) \(\div\) f\(^{\frac{5}{2}}\)g\(^o\)h\(^{\frac{7}{3}}\)

A. (\(\frac{g}{fh}\))²
B. f²g²h²
C. \(\frac{5}{4}\)g^oh\(\frac{7}{9}\)
D. \(\frac{g^2}{f^5h^7}\)
E. \(\frac{1}{f^2h^2}\)

View Answer & Discuss (4) JAMB 1982

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1314

Determine the mean monthly salary of 50 employees of a company from the following frequency distribution.
\(\begin{array}{c|c} \text{Monthly salary} & \text{Frequency}\\\hline N200.00 & 10\\ N325.00 & 5\\N100.00 & 20\\N120.00 & 2\\ N60.00 & 10\\ N80.00 & 3\end{array}\)