This question has been taken from Book:- ML aggarwal, Avichal publication, class10th, quadratic equation in one variable, chapter 5, exercise 5.5
This is an important ques
At an annual function of a school, each student gives the gift to every other student. If the number of gifts is 1980,find the number of students.
Question no. 24 , ML Aggarwal, chapter 5, exercise 5.5, quadratic equation in one variable, ICSE board,