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You would first want to draw out a tree diagram (example given by whiteboard) and divide the number given e.g. 8 in the question by prime numbers e.g. 8 can be split into two branches 2 and 4. 2 is a prim...

28 days holidays is equivalent to 4 weeks holiday. So in total works for 48 weeks. Now Bob works 30 hours per week, multiply this by 48 giving 1440 hours for his working year. So in order to solve for his...

When you look at the question you can see that you have been given a quadratic equation. These tend to come in the format ax^2 + bx + c = 0. Remember it may not always be x, it could be y or z, or another...

f (3) = (3)² - (3) + 7
= 9 - 3 + 7
= 13