STATISTICS - Jamb Mathematics Past Questions and Answers

Question 126:

• JAMB 1988

Tope bought X oranges at N5.00 each and some mangoes at N4.00 each. if she bought twice as many mangoes as oranges and spent at least N65.00 and at most N130.00, find the range of values of X.

A. 4≤X≤5
B. 5≤X≤8
C. 5≤X≤10
D. 8≤X≤10

Question 127:

• JAMB 1988

Tope bought X oranges at N5.00 each and some mangoes at N4.00 each. if she bought twice as many mangoes as oranges and spent at least N65.00 and at most N130.00, find the range of values of X.

A. 4≤X≤5
B. 5≤X≤8
C. 5≤X≤10
D. 8≤X≤10

Question 128:

• JAMB 1988

\(\begin{array}{c|c} Scores(x) & 0 & 1 & 2 & 3 & 4 & 5 & 6 \\ \hline Frequency(f) & 7 & 11 & 6 & 7 & 7 & 5 & 3\end{array}\)
In the distribution above, the mode and median respectively are

A. 1,3
B. 1, 2
C. 3, 3
D. 0, 2

Question 129:

• JAMB 1988

A basket contain green, black and blue balls in the ratio 5 : 2 : 1. If there are 10 blue balls. Find the corresponding new ratio when 10 green and 10 black balls are removed from the basket

A. 1 : 1 : 1
B. 4 : 2 : 1
C. 5 : 1 : 1
D. 4 : 1 : 1

Question 130:

• JAMB 1988

If x and y represent the mean and the median respectively of the following set of numbers 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, find the \(\frac{x}{y}\) correct to one decimal place

A. 18
B. 15
C. 1.0
D. 5