Post Utme Mathematics Past Questions and Answers

Question 186:

Evaluate \(\sqrt{15} \times (\sqrt{3})^3\)

A. \(15\sqrt{3}\)
B. \(3\sqrt{15}\)
C. \(9\sqrt{5}\)
D. \(\sqrt{45}\)

Question 187:

A pillar Y is 4 km east of a pillar X while another Z is 4 km south of Y on the same level ground. Find the straight line distance of X from Z.

A. \(4\sqrt{2}\) km
B. \(4\) km
C. \(2\) km
D. \(5\) km

Question 188:

The population of a town is 15,386. Express this number in two significant figures.

A. 16,000
B. 15,300
C. 15,400
D. 15,000

Question 189:

There is a basket containing red and blue balls. 40% of the balls are red and 60% of the balls are blue. Two red balls are added into the basket to make them 50% red and 50% blue balls in the basket. How many balls are in the basket now?

A. 4
B. 10
C. 12
D. 6

Question 190:

A 10 m ladder placed on the wall of a building makes an angle of 60° with the horizontal ground. What is the height of the building?

A. \(10\) m
B. \(7\) m
C. \(5\sqrt{3}\) m
D. \(5\) m