GEOMETRY AND TRIGONOMETRY - Jamb Mathematics Past Questions and Answers

Question 171:

• JAMB 1981

A micrometer is defined as one millionth of a millimeter. A length of 12,000 micrometres may be represented as

A. 0.00012m
B. 0.0000012m
C. 0.000012m
D. 0.00000012m
E. 0.000000012m

Question 172:

• JAMB 1981

In one and a half hours, the minute hand of a clock rotates through an angle of

A. 90^o
B. 180^o
C. 640^o
D. 450^o
E. 540^o

Question 173:

• JAMB 1981

In \(\bigtriangleup\)XYZ, XY = 3cm, XZ = 5cm and YZ = 7cm. If the bisector of XYZ meets XZ at W, what is the length of XW?

A. 1.5cm
B. 2.5cm
C. 3cm
D. 4cm
E. None of the above

Question 174:

• JAMB 1981

Two cars X and Y start at the same point and travel towards a point P which is 150km away. If the average speed of Y is 60km per hour and x arrives at P 25 minutes earlier than Y. What is the average speed of X?

A. 51\(\frac{3}{7}\)km per hour
B. 72km per hour
C. 37\(\frac{1}{2}\) km per hour
D. 66km per hour
E. 75km per hour

Question 175:

• JAMB 1981

The difference between the length and width of a rectangle is 6cm and the area is 135cm2. What is the length?

A. 25cm
B. 18cm
C. 15cm
D. 24cm
E. 27cm