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Thursday, 11 June 2026
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Mathematics Past Questions and Answers

Topic: Probability

Jamb Mathematics Questions - Probability

Question 6:
The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given.
Mark 0 1 2 3 4 5
Frequency 1 2 7 5 4 3



What is the probability of selecting a student from the group that scored 2 or 3
  • A \(\frac{1}{11}\)
  • B \(\frac{5}{22}\)
  • C \(\frac{7}{22}\)
  • D \(\frac{6}{11}\)
View Answer & Explanation
Question 7:
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 \( \frac{1}{15} \)
View Answer & Explanation
Question 8:
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
View Answer & Explanation
Question 9:
\(\begin{array}{c|c}
Numbers & 1 & 2 & 3 & 4 & 5 & 6 \\
\hline
Frequency & 18 & 22 & 20 & 16 & 10 & 14
\end{array}\)
The table above represents the outcome of throwing a die 100 times. What is the probability of obtaining at least a 4?
  • A \(\frac{1}{5}\)
  • B \(\frac{1}{2}\)
  • C \(\frac{2}{5}\)
  • D \(\frac{3}{4}\)
View Answer & Explanation
Question 10:
What is the probability that an integer x \((1 \leq x \leq 25)\) chosen at random is divisible by both 2 and 3?
  • A \(\frac{1}{25}\)
  • B \(\frac{1}{5}\)
  • C \(\frac{4}{25}\)
  • D \(\frac{3}{4}\)
View Answer & Explanation