Jamb Mathematics 1979 Past Questions and Answers

Question 16:

• JAMB 1979

(3.2)² - (1.8)² equals

A. 7.0
B. 2.56
C. 13.48
D. 2.0
E. 0.07

Question 17:

• JAMB 1979

In \(\bigtriangleup\)PQR, PQ = 10cm, QR = 8cm and RP = 6cm, the perpendicular RS is drawn from R to PQ. Find the length of RS

A. 4cm
B. 32cm
C. \(\frac{30}{7}\)
D. \(\frac{40}{7}\)
E. 4.8cm

Question 18:

• JAMB 1979

After getting a rise of 15%, a man's new monthly salary is N345. How much per month did he earn before the increase?

A. N330
B. N396.75
C. N300
D. N293.25
E. N360

Question 19:

• JAMB 1979

In base ten, the number 101101 (base 2) equals

A. 15
B. 4
C. 45
D. 32
E. 90

Question 20:

• JAMB 1979

The annul profits of a transport business were divided between the partners A and B in the ratio 3 : 5. If B received N3000 more than A, the total profit was

A. N5000
B. N1800
C. N12000
D. N24000
E. N8000