def calc():
logic.greeting()
print('What is the result of the expression?\n')
logic.run_game(generate_question_answer_pair_calc)
def gcd():
logic.greeting()
print('Find the greatest common divisor of given numbers.\n')
logic.run_game(generate_question_answer_pair_gcd)
def prime():
logic.greeting()
print('Answer "yes" if given number is prime. Otherwise answer "no".\n')
logic.run_game(generate_question_answer_pair_prime)
def even():
logic.greeting()
print('Answer "yes" if number even otherwise answer "no".\n')
logic.run_game(generate_question_answer_pair)
def progression():
logic.greeting()
print('What number is missing in the progression?\n')
logic.run_game(generate_question_answer_pair_progression)