Ключевые слова: achievement, brain, business, challenge, complete, complexity, complicated, computer, concentration, conundrum, create, creative, creativity, decision, demonstrating, device, difficult, display, education, educational, electronic, enjoyment, fun, gadget, game, idea, internet, knowledge, learning, leisure, mind, mobile, piece, play, problem, puzzle, relaxation, riddle, smart, solution, solving, strategy, success, technology, think, together,