Jamb Mathematics Past Questions and Answers

Question 626:

• JAMB 1981

Find a two-digit number such that three times the tens digit is 2 less than twice the units digit and twice the number is 20 greater than the number obtained by reversing the digits

A. 24
B. 42
C. 74
D. 47
E. 72

Question 627:

• JAMB 1981

Find the value of x satisfying \(\frac{x}{2}\) - \(\frac{1}{3}\) < \(\frac{2x}{5}\) + \(\frac{1}{6}\)

A. X < 5
B. X < 7\(\frac{1}{2}\)
C. X > 5
D. X > 7\(\frac{1}{2}\)

Question 628:

• JAMB 1981

A group of 14 children children received the following scores in a reading test: 35, 35, 26, 26, 26, 29, 29, 29, 12, 25, 25, 25, 25, 17. What was the median score?

A. 29
B. 26
C. 24
D. 25
E. 23

Question 629:

• JAMB 1981

Which of the following fractions is less than one-third?

A. \(\frac{22}{63}\)
B. \(\frac{4}{11}\)
C. \(\frac{15}{46}\)
D. \(\frac{33}{98}\)
E. \(\frac{122}{303}\)

Question 630:

• JAMB 1981

A cuboid has a diagonal of length 9cm and a square base of side 4cm. What is its height?

A. 9cm
B. \(\sqrt{65}\)cm
C. \(4\sqrt{2}\)cm
D. 7cm
E. 6.5cm