Mathematics Past Questions and Answers

What is the next number in the series 2, 1, \(\frac{1}{2}\), \(\frac{1}{4}\)...

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

Question 197:

If U = {x : x is an integer and 1 ≤ x ≤ 20 } E1 = {x: x is a multiple of 3} E2 = {x: x is a multiple of 4} and an integer is picked at random from U, find the probability that it is not in E2

A \(\frac{3}{4}\)
B \(\frac{3}{10}\)
C \(\frac{1}{4}\)
D \(\frac{1}{20}\)

Question 198:

The curved surface area of a cylinder 5cm high is 110cm2. Find the radius of its = \(\frac{22}{7}\)

A 2.6cm
B 3.5cm
C 3.6cm
D 7.0cm

Question 199:

If two graphs Y = px2 + q and y = 2x2 − 1 intersect at x =2, find the value of p in terms of q

A Q \(\frac{8}{7}\)
B 7 \(\frac{q}{4}\)
C 8 \(\frac{q}{2}\)
D 7 + \(\frac{q}{8}\)

Question 200:

Evaluate (\(\sin\)45o + \(\sin\)30o ) in surd form

A \(\frac{\sqrt{3}}{2\sqrt{2}}\)
B \(\frac{1}{2}\)
C \(\frac{1}{2}\)√2
D 1 + \(\frac{\sqrt{2}}{2}\)