Jamb Mathematics Past Questions and Answers

Question 611:

• JAMB 1980

If x varies inversely as y, and y varies directly as the square root of z, and z varies directly \(\frac{1}{w^2}\) write down in words how x varies with w

A. X varies inversely as w²
B. X varies directly as w²
C. X varies directly as w
D. X varies inversely as w
E. X varies directly as square root of w

Question 612:

• JAMB 1980

Write the decimal number 39 to base 2

A. 10011 base 2
B. 110111 base 2
C. 111001 base 2
D. 100101 base 2
E. 19.5 base 2

Question 613:

• JAMB 1980

If PN is perpendicular to QR, find the value of tan x.

A. \(\frac{5}{9}\)
B. \(\frac{3}{5}\)
C. \(\frac{3}{4}\)
D. \(\frac{4}{3}\)
E. \(\frac{5}{3}\)

Question 614:

• JAMB 1980

In the figure, PQ\\SR, ST\\, ST\\RQ, PS = 7cm, PT = 7cm, SR = 4cm. Find the ratio of the area QRST to the area of PQRS.

A. 56.77
B. 56.105
C. 28:105
D. 28:49
E. 56:49

Question 615:

• JAMB 1980

In the figure, If PT is parallel to RS, PQ = PT, and angle SQT = 90^o, Find x

A. 35^o
B. 50^o
C. 55^o
D. 70^o
E. 80^o