Question

पूर्ण संख्याओं के लिए घटाने की संक्रिया क्रम-विनिमेय नहीं हैं। तीन विभिन्न युग्म लेकर इसर्व
4.
जाँच कीजिए।
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Answer 1

Who invented school?

Horace Mann

Credit for our modern version of the school system usually goes to Horace Mann. When he became Secretary of Education in Massachusetts in 1837, he set forth his vision for a s