Jamb Mathematics Past Questions and Answers

Question 746:

• JAMB 1983

Factorize completely 81a4 - 16b4

A. (3a + 2b)(2a - 3b)(9a² + 4b²)
B. (3a - 2b)(2a - 3b)(4a² - 9b²)
C. (3a - 2b)(3a + 2b)(9a² + 4b²)
D. (6a - 2b)(8a - 3b)(4a³ - 9b²)

Question 747:

• JAMB 1983

One interior angle of a convex hexagon is 170^o and each of the remaining interior angles is equal to x^o. Find x

A. 120^o
B. 110^o
C. 105^o
D. 102^o
E. 100^o

Question 748:

• JAMB 1983

A ship H leaves a port P and sails 30 km due south. Then it sails 50km due west. What is the bearing of H from P?

A. 20^o 34'
B. 243^o 26'
C. 116^o 34'
D. 63^o 26'
E. 240^o 56'

Question 749:

• JAMB 1983

In a sample survey of a University Community, the following table shows the percentage distribution of the number of members per house hold
\(\begin{array}{c|c} \text{No. of members per household} & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & \text{Total} \\ \hline \text{No. of households} & 3 & 12 & 15 & 28 & 21 & 10 & 7 & 4 & 100\end{array}\)
What is the median?

A. 4
B. 3
C. 5
D. 4.5
E. None

Question 750:

• JAMB 1983

On a square paper of length 2.524375cm is inscribed square diagram of length 0.524375cm. Find the area of the paper not covered by the diagram. correct to 3 significant figures.

A. 6.00cm²
B. 6.10cm²
C. 6cmv
D. 6.09cm²
E. 4.00cm²