Here’s a sentence featuring some of the classic pitfalls. Choose from one of the five answers below to complete it correctly. The Chancellor admitted that interest rates, as well as inflation, has been struggling to be kept under control for some months now, with the result that portfolio managers were investing a large proportion of […]

# January 2011

## Quantitative: The Basics II: Factorisation, Square numbers and Powers

6 January 2011Here’s another question: What is the smallest positive integer y such that 71,400 multiplied by y is the square of a positive integer? * * * We could spend hours doing this by trial and error. But let’s consider what we know about square numbers, and about their factors, specifically their prime factors. Example 1 36 […]