STATISTICS - Jamb Mathematics Past Questions and Answers

Question 336:

• JAMB 2015

The probability of an event A is 1/5. The probability of B is 1/3 . The probability both A and B is 1/15. What is the probability of either event A or B or both

A. \( \frac{2}{15} \)
B. \( \frac{3}{4} \)
C. \( \frac{7}{15} \)
D. \( \frac{1}{15} \)

Question 337:

• JAMB 2015

The probability of an outcome A is 1/6 . The probability of the B outcome is 1/4 . If the probability of A or B or both is 1/12 . What is the probability of both outcomes A and B?

A. 1/2
B. 1/3
C. 2/5
D. 3/4

Question 338:

• JAMB 2016

If the mean of 4, y, 8 and 10 is 7. Find Y?

A. 6
B. 10
C. 7
D. 9

Question 339:

• JAMB 2016

The pie chart above shows the distribution of subjects offered by students in SSS III level. If 80 students enrolled in the class. What is the size of the angle of the sector in economics?

A. 24^o
B. 39^o
C. 32^o
D. 36^o

Question 340:

• JAMB 2016

Calculate the range of 20, -6, 25, 30, 21, 28, 32, 33, 34, 5, 3, 2, and 1.

A. 32
B. 36
C. 33
D. 40