Search for the title man green app. Questioner Green Edition is a platform that provides efficient learning services and supports convenient mobile phone search services. You can know the answer to the math problem by downloading the green Questman software. Questman software green edition contains primary school mathematics question bank, which is comprehensive and rich in content, covering all the knowledge points of primary school mathematics units in all grades, and can help children exercise their mathematical thinking, cultivate their interest in mathematics and improve their mathematics scores quickly.