快猫短视频

#237 Golden oldie

Set by Zoe Mensch

鈥淗mm鈥� is your name Rumpelschtumpel?鈥�

鈥淲hat?! How did you鈥�?鈥� cried the little imp. 鈥淏ut no matter. To get the gold, you will also need to enter the four-digit code on the padlock.鈥�

鈥淎 teensy clue?鈥� pleaded Prince Hopeful.

鈥淔ine, since you asked so politely, I鈥檒l offer you this. Take the last three digits of the year I was born, let鈥檚 call that number ABC. Then reverse that so the digits are in the order CBA. Find the difference between those two numbers, which we shall call XYZ. Then reverse that answer to ZYX and add XYZ and ZYX together. Simple as that!鈥�

鈥淎nd you鈥檒l tell me when you were born, won鈥檛 you?鈥� hoped Prince Hopeful.

鈥淎bout 5.30pm on a Wednesday,鈥� cackled Rumpelschtumpel, bounding away.

Any tips for Prince Hopeful?

Solution next week

#236 Picky eaters

Solution

Georgia should take one case of fizzy drink.

No matter what her sibling takes on their turn, Georgia will be able to leave one each of two different items after her second turn, which ensures that she gets the last item. For example, if Georgia takes a case of drink and her sibling takes one grocery bag, then Georgia can take two grocery bags on her second turn, leaving one case of drink and the sack of potatoes. Her sibling can only take one of these, so Georgia will be able to take whichever remains for her final turn. Any other choice for Georgia鈥檚 first turn will allow her sibling to put things in their favour.