The first term of an arithmetic sequence is 12 and the ninth term is 68.
Calculate the sum of the first 18 terms.
Answer : B
A discrete random variable can only take the values 2,3,4 or 5. The probabilities associated with some of the outcomes are: P(X=2) = 0.2, P(X=3) = 0.3, P(X=5) = 0.1.
For a randomly drawn value of X, calculate P(X>3).
Answer : C
The table below shows the distribution of the number of people in each household in a village.

Determine which of the following inequalities is true for the number of people living in a house.
Answer : A
An insurance company sells policies where, for each policy, the policyholder pays the first 50 of the cost of any claim. A claim reported to the insurance company takes some unknown value x.
Identify which of the mathematical expressions below represents the cost in to the insurance company of the claim.
Answer : D
In a small island nation, local sea vessels are identified using "a letter and 4 digits" classification system. The "letter" can be any of the 26 letters in the English alphabet, A to Z, while the "digit" can be any number from 0 to 9. E.g: Z9835.
Calculate the probability of a sea vessel having an identification ending in "007".
Answer : A
When differentiating the product of two factors, uand v,the Product Rule can be used.
State the Product Rule.
Answer : D
One of the two solutions to the equation is .

Determine the second solution.

Answer : C