यदि a तथा b ऐसे धन पूर्णाक है की a² - b² = 19 है तो a का मान क्या होगा? - - Yadi A Tatha B Aise Dhan पूर्णाक Hai Ki a& # 178 ; - b& # 178 ; = 19 Hai To A Ka Maan Kya Hoga ? Maths in hindi, number system 20 question answers in hindi pdf 9 questions in hindi, Know About 19 Maths online test Maths notes in hindi quiz book 10