Jamb Mathematics 2010 Past Questions and Answers

Question 21:

• JAMB 2010

Marks	1	2	3	4	5
Frequency	2	2	8	4	4

The table above show the marks obtained in a given test.
Find the mean mark

A. 3.1
B. 3.0
C. 3.2
D. 3.3

Question 22:

• JAMB 2010

Find r, if 6r7₈ = 511₉

A. 3
B. 2
C. 6
D. 5

Question 23:

• JAMB 2010

Simplify (\(\frac{3}{4}\) of \(\frac{4}{9}\) \(\div\) 9\(\frac{1}{2}\)) \(\div\) 1\(\frac{5}{19}\)

A. \(\frac{1}{5}\)
B. \(\frac{1}{4}\)
C. \(\frac{1}{36}\)
D. \(\frac{1}{25}\)

Question 24:

• JAMB 2010

A student measures a piece of rope and found that it was 1.26m long. If the actual length of the rope was 1.25m, what was the percentage error in the measurement?

A. 0.25%
B. 0.01%
C. 0.80%
D. 0.40%

Question 25:

• JAMB 2010

At what rate will the interest on N400 increases to N24 in 3 years reckoning in simple interest?

A. 3%
B. 2%
C. 5%
D. 4%