Обувь для бега и тренировок в городской среде Asics Heat Chaser

  • 20 Great Brainteasers for Engineers

    Which switch? Want some more brainteasers for engineers, here's a fun one. Brainteaser: In front of you are three light switches. Only one does anything, and it turns on the light downstairs. From here you can't see the light, and it makes no sound