Probability - Jamb Mathematics Past Questions and Answers

Question 71:

• JAMB 2011

Find the probability that a number picked at random from the set(43, 44, 45, ..., 60) is a prime number.

A. \(\frac{2}{3}\)
B. \(\frac{1}{3}\)
C. \(\frac{2}{9}\)
D. \(\frac{7}{9}\)

Question 72:

• JAMB 2012

The probability that a student passes a physics test is \(\frac{2}{3}\). If he takes three physics tests, what is the probability that he passes two of the tests?

A. \(\frac{2}{27}\)
B. \(\frac{3}{27}\)
C. \(\frac{4}{27}\)
D. \(\frac{5}{3}\)

Question 73:

• JAMB 2012

The probabilities that a man and his wife live for 80 years are \(\frac{2}{3}\) and \(\frac{3}{5}\) respectively. Find the probability that at least one of them will live up to 80 years

A. \(\frac{2}{15}\)
B. \(\frac{3}{15}\)
C. \(\frac{7}{15}\)
D. \(\frac{13}{15}\)

Question 74:

• JAMB 2013

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. \(\frac{3}{4}\)

Question 75:

• JAMB 2013

A basket contains 9 apples, 8 bananas and 7 oranges. A fruit is picked from the basket, find the probability that it is neither an apple nor an orange.

A. \(\frac{3}{8}\)
B. \(\frac{1}{3}\)
C. \(\frac{7}{24}\)
D. \(\frac{2}{3}\)