Post Utme Obafemi Awolowo University Mathematics Past Questions and Answers

Question 21:

Find \(D \cap E\)

A. \(\{2\}\)
B. \(\{3.5 ;\)
C. \(\{1,2.3 .4 .5 \cdot 6.7 .8 .9 .10\}\)
D. \(\varnothing\)

Question 22:

A bag contains 10 balls of which 3 are red and 7 are white. Two balls are drawn at random. Find the probability of none of the balls is red, if the draw is
With replacement:

A. 0.9.
B. 1.
C. \(0.47\)
D. \(0.21\)

Question 23:

A bag contains 10 balls of which 3 are red and 7 are white. Two balls are drawn at random. Find the probability of none of the balls is red, if the draw is
Without replacement

A. 0.1
B. 047
C. \(0.47\)
D. \(0.21\)

Question 24:

What is the value of \((x+y)\) in the equations \(\log _{3}^{x}=y=\log _{0}^{2 r-1}\) ?

A. O
B. 1
C. 2
D. 3