NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 216:

• JAMB 1982

A world congress of mathematicians were held in Nice in 1970 with 800 people participating. There were 300 from Europe, 200 from America, 150 from Asia, 45 from Africa and 105 from Australia. Representing the above on a pie chart, the angle of the sector representing the participants from Asia is?

A. 150^o
B. 67\(\frac{1}{2}\)^o
C. 67^o
D. 135^o
E. 68^o

Question 217:

• JAMB 1982

The diameter of a metal rod is measured as 23.40 cm to four significant figures. What is the maximum error in the measurement?

A. 0.05cm
B. 0.5cm
C. 0.045cm
D. 0.005cm
E. 0.004cm

Question 218:

• JAMB 1982

Simplify \(\frac{3}{2x - 1}\) + \(\frac{2 - x}{x - 2}\)

A. \(\frac{2 - x}{(2x - 1)(x - 2)}\)
B. \(\frac{5 - x}{(2x - 1)(x - 2)}\)
C. \(\frac{4 - 2x}{2x - 1}\)
D. \(\frac{6 - 3x}{(2x - 1)(x - 2)}\)

Question 219:

• JAMB 1982

A housewife bought 3 kilograms of garri at N13.00 per kg. She deposited N160. 00 for half a cow and bought 24 oranges at 10k each. She came back home with N20.60. She therefore left home with

A. N220.00
B. N222.00
C. N201.40
D. N202.00
E. N180.80

Question 220:

• JAMB 1982

Simplify f^{\(\frac{1}{2}\)}g²h^{\(\frac{1}{2}\)} \(\div\) f^{\(\frac{5}{2}\)}g^oh^{\(\frac{7}{3}\)}

A. (\(\frac{g}{fh}\))²
B. F²g²h²
C. \(\frac{5}{4}\)g^oh\(\frac{7}{9}\)
D. \(\frac{g^2}{f^5h^7}\)
E. \(\frac{1}{f^2h^2}\)