NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 106:

• JAMB 2015

Given that A = {1, 5, 7}
B = {3, 9, 12, 15}
C = {2, 4, 6, 8}
Find (A ∪ B) ∪ C

A. {1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 15}
B. {1, 2, 3, 5, 6, 8, 12, 15}
C. {2, 4, 5, 9, 12, 15}
D. {1, 5, 6, 7, 8, 9, 12, 15}

Question 107:

• JAMB 2015

The extension of a stretched string is directly proportional to its tension. If the extension produced by a tension of 8 Newton’s is 2cm, find the extension produced by a tension of 12 newton’s.

A. 2
B. 1
D. 3

Question 108:

• JAMB 2015

Find the simple interest on N325 in 5years at 3% per annum.

A. N48.75K
B. N50.10K
C. N75.50K
D. N15.75K

Question 109:

• JAMB 2015

Simplify (0.09)² and give your answer correct to 4 significant figures

A. 0.81
B. 0.081
C. 0.0081
D. 8.0001

Question 110:

• JAMB 2015

Given that A = {3, 4, 1, 10, 1/3 }
B = {4, 3 1/3, 1/3, 7}.
Find A∩B

A. {}
B. {1/3, 1, 2}
C. {3, 4, 1/3}
D. {1, 3, 1/3}