{
    "id":  4239,
    "type":  1,
    "question":  "Express the answer as a mixed number in its simplest form where necessary. \u003chr\u003e 5 - 1 $$\\frac{9}{10}$$ = _______",
    "answers":  [
                    "3 $$\\frac{1}{10}$$",
                    "3 $$\\frac{1}{5}$$",
                    "3 $$\\frac{1}{4}$$",
                    "None of the above"
                ],
    "correct_index":  0,
    "solution":  null,
    "hints":  [

              ]
}