Moving up or right, what is the highest total you can make, using the mathematical signs along the way?
[Ref: ZDUC] © Kevin Stone
During a recent trip to Scotland, I filled my petrol tank to the top, a total of 10 gallons.
I travelled at 60 mph up the motorway and I knew that I could average 40 miles per gallon.
However, the moment I started, my petrol tank developed a leak and four hours later I ground to a halt having run out of petrol.
How much petrol had I lost through the leak?
[Ref: ZNFV] © Kevin Stone
Hint: How far did I travel?
Answer: I had lost 4 gallons in total.
I travelled at 60mph for 4 hours, which is 240 miles. At 40 miles per gallon this used 6 gallons, which meant the remaining 4 gallons were lost.
Below are seven countries, whose letters have been scrambled.
Once you have unscrambled the letters, the first letters of each of the countries can then be scrambled to make another country.
Can you find this country?
[Ref: ZZVB] © Kevin Stone
Hint: One of the answers is YEMEN.
AEHIIOPT = Ethiopia
CEEEGR = Greece
AAAACDGMRS = Madagascar
ANORWY = Norway
AAIMNOR = Romania
EEMNY = Yemen
A + E + G + M + N + R + Y = Germany.
Which of the six black shapes is/are identical to the red one? There may be more than one which is exactly the same.
[Ref: ZMZL] © Robert A. Hartmann.
Hint: Try and rotate them around in your head, and watch out for mirror images.