There are 'n' students in a grade 6 of a school. Each student is given unique roll number from 1 to 'n'. On a particular day, each student was present except Jessica. The sum of roll numbers of students present is 458. The roll number of Jessica is
A) 7
B) 8
C) 9
D) 10
E) None of the above
OA will be given later.
A) 7
B) 8
C) 9
D) 10
E) None of the above
OA will be given later.
