GK 2017 Q2
2. Which of the following equalities is true?
- A \(\dfrac{4}{1} = 1.4\)
- B \(\dfrac{5}{2} = 2.5\)
- C \(\dfrac{6}{3} = 3.6\)
- D \(\dfrac{7}{4} = 4.7\)
- E \(\dfrac{8}{5} = 5.8\)
Grey Kangaroo 2017, Question 2. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: B \(\dfrac{5}{2} = 2.5\)
When you evaluate correctly the left-hand side of each proposed equality in turn, you obtain 4, 2.5, 2, 1.75 and 1.6. Hence the only true equality is \(\tfrac{5}{2} = 2.5\).
Solution © UK Mathematics Trust, from the GK 2017 solutions.