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Hint
It will take a while to check 1 x 7, 2 x 7, 3 x 7. What do we know about the answer?
Answer
63,492 x 7 = 444,444
Reasoning
We can work backwards, as we know that the number multiplied by 7 has only 4's. We can try the following:
4 ÷ 7 ≈ 0.57 x
44 ÷ 7 ≈ 6.29 x
444 ÷ 7 ≈ 63.43 x
4,444 ÷ 7 ≈ 634.86 x
44,444 ÷ 7 ≈ 6,349.14 x
444,444 ÷ 7 = 63,492
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Puzzle 60
The BrainBashers golf world tour is well underway and Fred is planning the journey to each location.
Unfortunately, the BrainBashers atlas is playing up again and has worked out the mileage incorrectly, as shown below.
Birmingham 47,000
Oslo 18,000
Chicago 32,000
Manhattan 42,000
According to the system, how many miles is it to Sydney?
It is now four years since I first asked for support, and I would like to sincerely thank everyone who has helped me. BrainBashers doesn't show adverts, and I continue to depend on the ongoing support from everyone who enjoys the site.
